Build(deps): bump protobuf-java from 3.12.1 to 3.12.2
Build(deps): bump protobuf-java from 3.12.1 to 3.12.2

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.12.1 to 3.12.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/master/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.12.1...v3.12.2)

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