Bump com.google.protobuf:protobuf-java from 4.30.1 to 4.30.2

Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 4.30.1 to 4.30.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v4.30.1...v4.30.2)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: prometheus-metrics-exposition-formats/pom.xml

@@ -20,7 +20,7 @@
 
     <properties>
         <automatic.module.name>io.prometheus.metrics.expositionformats</automatic.module.name>
-        <protobuf-java.version>4.30.1</protobuf-java.version>
+        <protobuf-java.version>4.30.2</protobuf-java.version>
     </properties>
 
     <dependencies>