Bump protobuf-java from 3.21.2 to 3.21.3

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.21.2 to 3.21.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.21.2...v3.21.3)

---
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]>

build.gradle

@@ -235,7 +235,7 @@ signing {
 
 dependencies {
 	testImplementation "junit:junit:4.13.2"
-	testImplementation 'com.google.protobuf:protobuf-java:3.21.2'
+	testImplementation 'com.google.protobuf:protobuf-java:3.21.3'
 	testRuntimeOnly 'org.apache.logging.log4j:log4j-core:2.18.0'
 	testRuntimeOnly 'org.apache.logging.log4j:log4j-jpl:2.18.0'
 }