Bump actions/setup-java from 1 to 3, use Temurin, drop Java 14

Bump actions/setup-java from 1 to 3, use Temurin, drop Java 14

Adopt OpenJDK moved to Eclipse Temurin and is no longer updated. Temurin
builds for JDK 14 are however not available. Therefore, we drop the JDK
14 CI build.

Bumps [actions/setup-java](https://github.com/actions/setup-java) from 1 to 3.
- [Release notes](https://github.com/actions/setup-java/releases)
- [Commits](https://github.com/actions/setup-java/compare/v1...v3)

---
updated-dependencies:
- dependency-name: actions/setup-java
- dependency-type: direct:production
- update-type: version-update:semver-major

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>