build(deps): bump com.google.protobuf:protobuf-java

Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 4.28.0 to 4.28.1.
- [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-patch
...

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

contribs/hybridsim/pom.xml

@@ -10,7 +10,7 @@
 	<name>hybridsim</name>
 
 	<properties>
-		<protobuf.version>4.28.0</protobuf.version>
+		<protobuf.version>4.28.1</protobuf.version>
 		<grpc.version>1.66.0</grpc.version>
 	</properties>
 

contribs/protobuf/pom.xml

@@ -11,7 +11,7 @@
     <name>protobuf</name>
 
     <properties>
-        <protobuf.version>4.28.0</protobuf.version>
+        <protobuf.version>4.28.1</protobuf.version>
     </properties>
 
     <dependencies>