- Change compiler plugin source/target from hardcoded 1.8 to use properties
- Ensures consistency with maven.compiler.source/target set to 11
- Prevents version mismatch between properties and plugin configuration
- Aligns with surefire Java 9+ module arguments
- Fix inconsistency between maven.compiler.source/target (1.8) and
surefire JVM args (Java 9+ module flags like --add-opens)
- Update to Java 11 to match CI environment (GitHub Actions uses Java 11)
- Docker environment uses Java 17 which is also compatible
- Java 11+ is required for the --add-opens/--add-exports flags used
in the surefire configuration
chrislu