Bump protobuf.version from 3.25.5 to 4.28.3

Bumps `protobuf.version` from 3.25.5 to 4.28.3.

Updates `com.google.protobuf:protobuf-java` from 3.25.5 to 4.28.3
- [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)

Updates `com.google.protobuf:protobuf-java-util` from 3.25.5 to 4.28.3

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

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

pom.xml

@@ -69,7 +69,7 @@
   </developers>
 
   <properties>
-    <protobuf.version>3.25.5</protobuf.version>
+    <protobuf.version>4.28.3</protobuf.version>
     <vertx.version>4.5.11</vertx.version>
     <opentelemetry.version>1.43.0</opentelemetry.version>
     <opentelemetry.proto.version>1.3.2-alpha</opentelemetry.proto.version>