Add jitpack#2

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tudorluca wants to merge 2 commits intotudor/ray-take-two-deps-upgradesfrom

tudor/ray-take-two-deps-upgrades-jitpack

Commits on Feb 20, 2023

Make maven-publish publishing signing required only when "isRelease == true"
tudorluca
committed
Add jitpack.yml config file to force Java 11 usage.
tudorluca
committed