test(deps): update dependency com.google.protobuf:protoc to v3.25.5 (#…

…2344)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.protobuf:protoc](https://developers.google.com/protocol-buffers/) ([source](https://redirect.github.com/protocolbuffers/protobuf)) | patch | `3.25.4` -> `3.25.5` |

---

### Release Notes

<details>
<summary>protocolbuffers/protobuf (com.google.protobuf:protoc)</summary>

### [`v3.25.5`](https://redirect.github.com/protocolbuffers/protobuf/compare/v3.25.4...v3.25.5)

[Compare Source](https://redirect.github.com/protocolbuffers/protobuf/compare/v3.25.4...v3.25.5)

</details>

---

### Configuration

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🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

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google-cloud-bigtable/pom.xml

@@ -44,7 +44,7 @@
 
     <!-- These are needed to compile the protobuf used by Changestream merging acceptance test. -->
     <test-protoc-grpc.version>1.65.0</test-protoc-grpc.version>
-    <test-protoc.version>3.25.4</test-protoc.version>
+    <test-protoc.version>3.25.5</test-protoc.version>
   </properties>
 
   <dependencyManagement>