Bump com.google.protobuf:protobuf-java

Bumps the maven group with 1 update in the /proto directory: [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf).


Updates `com.google.protobuf:protobuf-java` from 4.28.0 to 4.28.2
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  dependency-group: maven
...

Signed-off-by: dependabot[bot] <[email protected]>

proto/pom.xml

@@ -31,7 +31,7 @@
     <!-- This is duplicated here because that is recommended by `artifact:check-buildplan` -->
     <project.build.outputTimestamp>2024-05-19T18:54:10Z</project.build.outputTimestamp>
 
-    <protobufVersion>4.28.0</protobufVersion>
+    <protobufVersion>4.28.2</protobufVersion>
 
     <!-- Overwrite property from parent; this module is currently not deployed -->
     <gson.isInternalModule>true</gson.isInternalModule>