Gradle build fails on Mac OS

[AddictArts]

Requires JDK > 15, but the readme says 8+. It also fails with OpenJDK 17.

Was using JDK 11 and 17.

[theapache64]

@AddictArts To run the binary, you only need JDK 8+, but to build from the source, you need JDK 15.