deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.87.0 (#1925)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-spanner-bom](https://redirect.github.com/googleapis/java-spanner) | `6.86.0` -> `6.87.0` | [![age](https://developer.mend.io/api/mc/badges/age/maven/com.google.cloud:google-cloud-spanner-bom/6.87.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/com.google.cloud:google-cloud-spanner-bom/6.87.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/com.google.cloud:google-cloud-spanner-bom/6.86.0/6.87.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/com.google.cloud:google-cloud-spanner-bom/6.86.0/6.87.0?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

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

### [`v6.87.0`](https://redirect.github.com/googleapis/java-spanner/blob/HEAD/CHANGELOG.md#6870-2025-02-20)

[Compare Source](https://redirect.github.com/googleapis/java-spanner/compare/v6.86.0...v6.87.0)

##### Features

-   Add AddSplitPoints API ([a5ebcd3](https://redirect.github.com/googleapis/java-spanner/commit/a5ebcd343a67c57d61362cfb0ccb4888f5503681))
-   Add option for multiplexed sessions with partitioned operations ([#&#8203;3635](https://redirect.github.com/googleapis/java-spanner/issues/3635)) ([dc89b4d](https://redirect.github.com/googleapis/java-spanner/commit/dc89b4d7663f0e40a9169b21243f2d94f2fc5749))
-   Add option to indicate that a statement is the last in a transaction ([#&#8203;3647](https://redirect.github.com/googleapis/java-spanner/issues/3647)) ([b04ea80](https://redirect.github.com/googleapis/java-spanner/commit/b04ea804cfa9551b4d7c49cd83f0ef1120942423))
-   Adding gfe_latencies metric to built-in metrics ([#&#8203;3490](https://redirect.github.com/googleapis/java-spanner/issues/3490)) ([314dadc](https://redirect.github.com/googleapis/java-spanner/commit/314dadc31f4a5aa798d45886db7231c1bd8b7a91))
-   **spanner:** Support multiplexed session for read-write transactions ([#&#8203;3608](https://redirect.github.com/googleapis/java-spanner/issues/3608)) ([bda78ed](https://redirect.github.com/googleapis/java-spanner/commit/bda78edaba827acf974c87c335868a6f8caa38f2))

##### Bug Fixes

-   **deps:** Update the Java code generator (gapic-generator-java) to 2.53.0 ([20a3d0d](https://redirect.github.com/googleapis/java-spanner/commit/20a3d0da41509ffca66c77de6771fc8080930613))
-   **spanner:** End spans for read-write methods ([#&#8203;3629](https://redirect.github.com/googleapis/java-spanner/issues/3629)) ([4a1f99c](https://redirect.github.com/googleapis/java-spanner/commit/4a1f99c6bb872ffc08e60d3843e4cdfc4efa2690))
-   **spanner:** Release resources in TransactionManager ([#&#8203;3638](https://redirect.github.com/googleapis/java-spanner/issues/3638)) ([e0a3e5b](https://redirect.github.com/googleapis/java-spanner/commit/e0a3e5bd169e28e349a2dc92f86a2a9b5510f8f6))

##### Dependencies

-   Update dependency com.google.cloud:sdk-platform-java-config to v3.43.0 ([#&#8203;3642](https://redirect.github.com/googleapis/java-spanner/issues/3642)) ([c12968a](https://redirect.github.com/googleapis/java-spanner/commit/c12968a5f6dad95017d9867d96d4f19a26643a07))

</details>

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Author: renovate-bot

pom.xml

@@ -61,7 +61,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.86.0</version>
+        <version>6.87.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
@@ -207,6 +207,12 @@
       <version>0.33.0</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>io.opentelemetry</groupId>
+      <artifactId>opentelemetry-api-incubator</artifactId>
+      <version>1.45.0-alpha</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-trace</artifactId>

samples/spring-data-jdbc/pom.xml

@@ -30,7 +30,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.86.0</version>
+        <version>6.87.0</version>
         <scope>import</scope>
         <type>pom</type>
       </dependency>