Bump protobuf-java from 3.12.4 to 3.16.1 in /alluxio (#4429)
Bump protobuf-java from 3.12.4 to 3.16.1 in /alluxio (#4429)

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.12.4 to 3.16.1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.12.4...v3.16.1)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
jongyoul/zeppelin,apache/zeppelin,jongyoul/zeppelin,jongyoul/zeppelin,apache/zeppelin,jongyoul/zeppelin,apache/zeppelin,apache/zeppelin,apache/zeppelin,apache/zeppelin,jongyoul/zeppelin,jongyoul/zeppelin,jongyoul/zeppelin,apache/zeppelin