deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.111.1 (#2411)

This PR contains the following updates:

| Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Adoption](https://docs.renovatebot.com/merge-confidence/) | [Passing](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner-bom](https://redirect.github.com/googleapis/java-spanner) | `6.111.0` → `6.111.1` | ![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-spanner-bom/6.111.1?slim=true) | ![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-spanner-bom/6.111.1?slim=true) | ![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-spanner-bom/6.111.0/6.111.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-spanner-bom/6.111.0/6.111.1?slim=true) |

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### Release Notes

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

### [`v6.111.1`](https://redirect.github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#61111-2026-03-03)

[Compare Source](https://redirect.github.com/googleapis/java-spanner/compare/v6.111.0...v6.111.1)

##### Bug Fixes

- Retry CreateSession also when waitForMinSessions is zero ([#&#8203;4360](https://redirect.github.com/googleapis/java-spanner/issues/4360)) ([9263972](https://redirect.github.com/googleapis/java-spanner/commit/92639722793a994032761155013e506c9693b464))

##### Dependencies

- Update dependency com.google.cloud:sdk-platform-java-config to v3.57.0 ([#&#8203;4358](https://redirect.github.com/googleapis/java-spanner/issues/4358)) ([1ce4b8e](https://redirect.github.com/googleapis/java-spanner/commit/1ce4b8e24bac44c89f742f0afb395ae4c711abfd))
- Update googleapis/sdk-platform-java action to v2.67.0 ([#&#8203;4359](https://redirect.github.com/googleapis/java-spanner/issues/4359)) ([23781d9](https://redirect.github.com/googleapis/java-spanner/commit/23781d9f05db66d033d4d9125707a9988e1697db))

</details>

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Author: renovate-bot

java-spanner-jdbc/pom.xml

@@ -61,7 +61,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.111.0</version>
+        <version>6.111.1</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>

java-spanner-jdbc/samples/spring-data-jdbc/googlesql/pom.xml

@@ -30,7 +30,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.111.0</version>
+        <version>6.111.1</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>

java-spanner-jdbc/samples/spring-data-jdbc/postgresql/pom.xml

@@ -30,7 +30,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.111.0</version>
+        <version>6.111.1</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>

java-spanner-jdbc/samples/spring-data-mybatis/googlesql/pom.xml

@@ -35,7 +35,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.111.0</version>
+        <version>6.111.1</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>