chore(deps): update dependency com.google.protobuf:protobuf-java to v3.21.5 (#2123)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.protobuf:protobuf-java](https://developers.google.com/protocol-buffers/) ([source](https://github.com/protocolbuffers/protobuf)) | `3.21.4` -> `3.21.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java/3.21.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java/3.21.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java/3.21.5/compatibility-slim/3.21.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.protobuf:protobuf-java/3.21.5/confidence-slim/3.21.4)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>protocolbuffers/protobuf</summary>

### [`v3.21.5`](https://github.com/protocolbuffers/protobuf/compare/v3.21.4...v3.21.5)

[Compare Source](https://github.com/protocolbuffers/protobuf/compare/v3.21.4...v3.21.5)

</details>

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Author: renovate-bot

pom.xml

@@ -499,7 +499,7 @@
     <project.oauth.version>1.34.1</project.oauth.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.gson.version>2.8.6</project.gson.version>
-    <project.protobuf-java.version>3.21.4</project.protobuf-java.version>
+    <project.protobuf-java.version>3.21.5</project.protobuf-java.version>
     <project.guava.version>31.1-jre</project.guava.version>
     <project.appengine.version>2.0.5</project.appengine.version>
     <project.xpp3.version>1.1.4c</project.xpp3.version>