chore(deps): bump maven-compiler-plugin from 3.6.1 to 3.8.1 (#535)
chore(deps): bump maven-compiler-plugin from 3.6.1 to 3.8.1 (#535)

Bumps [maven-compiler-plugin](https://github.com/apache/maven-compiler-plugin) from 3.6.1 to 3.8.1.
- [Release notes](https://github.com/apache/maven-compiler-plugin/releases)
- [Commits](https://github.com/apache/maven-compiler-plugin/compare/maven-compiler-plugin-3.6.1...maven-compiler-plugin-3.8.1)

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

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
firebase/firebase-admin-java,firebase/firebase-admin-java