PR Builder GitHub action broken

[JackPGreen]

Even for a trivial PR, the PR builder is failing:

Downloaded com.hazelcast:hazelcast-enterprise:5.3.0-SNAPSHOT:jar from remote repository: https://repository.hazelcast.com/snapshot/
hazelcast-enterprise-tests.jar already exists, not downloading.
Starting Remote Controller ... enterprise ...
Error: LinkageError occurred while loading main class com.hazelcast.remotecontroller.Main
java.lang.UnsupportedClassVersionError: com/hazelcast/remotecontroller/Main has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0
{...}
Server could not start on port 9701 in 300 seconds. Test FAILED.