Enable jdk21 reproducible comparison builds.

[sophia-guo]

Close #767

Signed-off-by: Sophia Guo [email protected]

[github-actions]

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[andrew-m-leonard]

run tests quick

[eclipse-temurin-bot]

 PR TESTER RESULT 

❎ Some pipelines failed or the job was aborted! ❎
See the pipeline-build-check below for more information...

[andrew-m-leonard]

alpine build just had a GPG connection issue, re-build was fine

[andrew-m-leonard]

lgtm