chore(deps): update dependency com.google.cloud:google-cloud-spanner to v6.81.0 (#3427)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner](https://redirect.github.com/googleapis/java-spanner) | `6.79.0` -> `6.81.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-spanner/6.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-spanner/6.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-spanner/6.79.0/6.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-spanner/6.79.0/6.81.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>googleapis/java-spanner (com.google.cloud:google-cloud-spanner)</summary>

### [`v6.81.0`](https://redirect.github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#6810-2024-11-01)

[Compare Source](https://redirect.github.com/googleapis/java-spanner/compare/v6.80.1...v6.81.0)

##### Features

-   Client built in metrics ([#&#8203;3408](https://redirect.github.com/googleapis/java-spanner/issues/3408)) ([36bc384](https://redirect.github.com/googleapis/java-spanner/commit/36bc384c3037e18dcfe42204bb691aba1744c926))

##### Dependencies

-   Update dependency com.google.cloud:google-cloud-monitoring to v3.54.0 ([#&#8203;3439](https://redirect.github.com/googleapis/java-spanner/issues/3439)) ([baa5eb1](https://redirect.github.com/googleapis/java-spanner/commit/baa5eb17430dea592f6f61ad6a31777084d464d9))

### [`v6.80.1`](https://redirect.github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#6801-2024-10-28)

[Compare Source](https://redirect.github.com/googleapis/java-spanner/compare/v6.80.0...v6.80.1)

##### Dependencies

-   Update googleapis/sdk-platform-java action to v2.49.0 ([#&#8203;3430](https://redirect.github.com/googleapis/java-spanner/issues/3430)) ([c907346](https://redirect.github.com/googleapis/java-spanner/commit/c90734639661fbf2922e095c6209ac0d223dd05b))
-   Update sdk platform java dependencies ([#&#8203;3431](https://redirect.github.com/googleapis/java-spanner/issues/3431)) ([fa1c926](https://redirect.github.com/googleapis/java-spanner/commit/fa1c926f13a974874a3e718e218294cd853fc61f))

### [`v6.80.0`](https://redirect.github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#6800-2024-10-25)

[Compare Source](https://redirect.github.com/googleapis/java-spanner/compare/v6.79.0...v6.80.0)

##### Features

-   Enabling endToEndTracing support in Connection API ([#&#8203;3412](https://redirect.github.com/googleapis/java-spanner/issues/3412)) ([80a43e9](https://redirect.github.com/googleapis/java-spanner/commit/80a43e91400d2218aeab4eb9119a243ae8eab611))

##### Dependencies

-   Update dependency com.google.cloud:sdk-platform-java-config to v3.38.0 ([#&#8203;3424](https://redirect.github.com/googleapis/java-spanner/issues/3424)) ([ddf0012](https://redirect.github.com/googleapis/java-spanner/commit/ddf00125a1c736119787d2b2db8c2c037da11666))
-   Update dependency io.opentelemetry:opentelemetry-bom to v1.43.0 ([#&#8203;3399](https://redirect.github.com/googleapis/java-spanner/issues/3399)) ([29b3df5](https://redirect.github.com/googleapis/java-spanner/commit/29b3df5fc531f7b7180ae5eddc6aab52c81fbd1e))
-   Update dependency io.opentelemetry:opentelemetry-sdk-testing to v1.43.0 ([#&#8203;3398](https://redirect.github.com/googleapis/java-spanner/issues/3398)) ([5e7aec8](https://redirect.github.com/googleapis/java-spanner/commit/5e7aec86e92bd5aa53abddff93c22461e04bdae9))
-   Update googleapis/sdk-platform-java action to v2.48.0 ([#&#8203;3422](https://redirect.github.com/googleapis/java-spanner/issues/3422)) ([1da8092](https://redirect.github.com/googleapis/java-spanner/commit/1da80929479d94761768be580490c4de5b016360))

##### Documentation

-   Fix tracing sample to exit when completed, and use custom monitored resource for export ([#&#8203;3287](https://redirect.github.com/googleapis/java-spanner/issues/3287)) ([ae4e5c7](https://redirect.github.com/googleapis/java-spanner/commit/ae4e5c757ebdcd7a52d27d2be733e822bdecddf6))

</details>

---

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Author: renovate-bot

java-spanner/benchmarks/pom.xml

@@ -92,7 +92,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.79.0</version>
+      <version>6.81.0</version>
     </dependency>
     <dependency>
       <groupId>commons-cli</groupId>

java-spanner/samples/install-without-bom/pom.xml

@@ -33,7 +33,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner</artifactId>
-      <version>6.79.0</version>
+      <version>6.81.0</version>
     </dependency>
     <!-- [END spanner_install_without_bom] -->