deps: update dependency com.google.cloud:gapic-libraries-bom to v1.68.0 (#7197)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:gapic-libraries-bom](https://redirect.github.com/googleapis/google-cloud-java) | `1.67.0` -> `1.68.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:gapic-libraries-bom/1.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:gapic-libraries-bom/1.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:gapic-libraries-bom/1.67.0/1.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:gapic-libraries-bom/1.67.0/1.68.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/google-cloud-java (com.google.cloud:gapic-libraries-bom)</summary>

### [`v1.68.0`](https://redirect.github.com/googleapis/google-cloud-java/blob/HEAD/CHANGELOG.md#1680-2025-09-11)

[Compare Source](https://redirect.github.com/googleapis/google-cloud-java/compare/v1.67.0...v1.68.0)

##### ⚠ BREAKING CHANGES

- \[chat] Changed field behavior for an existing field `name` in message `.google.chat.v1.QuotedMessageMetadata`

##### Features

- \[aiplatform] Add API response for Gen AI Evaluation in Tuning ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[aiplatform] add Validation mode in FunctionCallingConfig ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[aiplatform] PSC support for custom weights deploy ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[aiplatform] Tuning PreTunedModel API field ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[analyticshub] You can now configure listings for multiple regions for shared datasets and linked dataset replicas in BigQuery sharing ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[bigqueryreservation] Add a new field `soft_failover_start_time` in the existing `replication_status` in `.google.cloud.bigquery.reservation.v1.Reservation` to provide visibility into the state of ongoing soft failover operations on the reservation ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[cloudsecuritycompliance] new module for cloudsecuritycompliance ([#&#8203;11740](https://redirect.github.com/googleapis/google-cloud-java/issues/11740)) ([fc17dde](https://redirect.github.com/googleapis/google-cloud-java/commit/fc17dded72d8c44c00f17539c065bcd61421977d))
- \[compute] Update Compute Engine v1 API to revision [`2025081`](https://redirect.github.com/googleapis/google-cloud-java/commit/20250810) ([#&#8203;1091](https://redirect.github.com/googleapis/google-cloud-java/issues/1091)) ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[confidentialcomputing] Add new `VerifyConfidentialSpace` and `VerifyConfidentialGke` rpcs and relevant fields ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[dataplex] A new service `BusinessGlossaryService` is added ([75896ab](https://redirect.github.com/googleapis/google-cloud-java/commit/75896ab07163a97a12a067dab9c255b014285a22))
- \[discoveryengine] Added `ranking_expression_backed` and `rank_signals` fields related to the Custom Ranking feature ([75896ab](https://redirect.github.com/googleapis/google-cloud-java/commit/75896ab07163a97a12a067dab9c255b014285a22))
- \[dlp] add LocationSupport,Domain,DocumentFallbackLocation ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[gdchardwaremanagement] Added RequestOrderDateChange RPC - allows Customers to request date changes ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[infra-manager] added support for service maintained provider ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[kms] Support KEY\_ENCAPSULATION purpose and quantum-safe algorithms ML\_KEM\_768, ML\_KEM\_1024 and KEM\_XWING ([75896ab](https://redirect.github.com/googleapis/google-cloud-java/commit/75896ab07163a97a12a067dab9c255b014285a22))
- \[netapp] add new fields for flex auto tiering ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[network-security] add address groups API ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[networkconnectivity] introduce DataTransfer APIs ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[retail] release the conversational search public SDK ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[retail] release the latest conversational search public SDK ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[securitycenter] add GCE to DeploymentPlatform enum ([75896ab](https://redirect.github.com/googleapis/google-cloud-java/commit/75896ab07163a97a12a067dab9c255b014285a22))
- \[texttospeech] Add prompt to SynthesisInput ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[texttospeech] Add string value prompt to SynthesisInput ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[texttospeech] Support promptable voices by specifying a model name and a prompt ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[texttospeech] Support promptable voices by specifying a model name and a prompt ([cea98dc](https://redirect.github.com/googleapis/google-cloud-java/commit/cea98dc249c7932bb176d31da2a4b13af0567049))
- \[vmmigration] Azure as a source ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- **accounts:** Add batch operations for custom regions ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- Add a new version for biglake  ([#&#8203;11742](https://redirect.github.com/googleapis/google-cloud-java/issues/11742)) ([792f8c0](https://redirect.github.com/googleapis/google-cloud-java/commit/792f8c07f4daff206b8c015de664dabc4a5b8d83))

##### Bug Fixes

- \[chat] Changed field behavior for an existing field `name` in message `.google.chat.v1.QuotedMessageMetadata` ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- **deps:** update dependency com.google.apis:google-api-services-cloudresourcemanager to v1-rev20250606-2.0.0 ([#&#8203;11472](https://redirect.github.com/googleapis/google-cloud-java/issues/11472)) ([0e52ea3](https://redirect.github.com/googleapis/google-cloud-java/commit/0e52ea30d8dc497f15f8ebd99da6e61b8257f3af))
- **deps:** update the Java code generator (gapic-generator-java) to 2.62.1 ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- update dependency com.google.cloud:sdk-platform-java-config to v3.52.1 ([#&#8203;11738](https://redirect.github.com/googleapis/google-cloud-java/issues/11738)) ([b17cf6d](https://redirect.github.com/googleapis/google-cloud-java/commit/b17cf6de63b9cabcd44b6fc21b57c187b321ae8f))

##### Documentation

- \[errorreporting] automated code change ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[publicca] Add API publishing information for public CA.googleapis.com ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))
- \[retail] A comment for enum `Mode` is changed ([1214050](https://redirect.github.com/googleapis/google-cloud-java/commit/12140505efaab4448497c15479dd36cc15629b17))

</details>

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This PR was generated by [Mend Renovate](https://mend.io/renovate/). View the [repository job log](https://developer.mend.io/github/googleapis/java-cloud-bom).
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Author: renovate-bot

google-cloud-bom/pom.xml

@@ -167,7 +167,7 @@
         <!-- Artifacts from google-cloud-java monorepo -->
         <groupId>com.google.cloud</groupId>
         <artifactId>gapic-libraries-bom</artifactId>
-        <version>1.67.0</version>
+        <version>1.68.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>