Bump com.google.protobuf:protobuf-java from 4.27.4 to 4.28.0

Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 4.27.4 to 4.28.0.
- [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
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -139,7 +139,7 @@
         <proguard.version>7.5.0</proguard.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <prosys.sdk.version>5.2.2-139</prosys.sdk.version>
-        <protobuf.version>4.27.4</protobuf.version>
+        <protobuf.version>4.28.0</protobuf.version>
         <rgxgen.version>2.0</rgxgen.version>
         <root.basedir>${project.basedir}</root.basedir>
         <slf4j.ext.version>1.0.0-jdk6</slf4j.ext.version>