Add Java 24 into test matrix #2190

Job	Run time
spotlessCheck assemble testClasses	45s
build (maven, 17, ubuntu-latest)	47s
build (maven, 11, ubuntu-latest)	49s
build (maven, 24, ubuntu-latest)	7m 15s
build (gradle, 17, ubuntu-latest)	1m 3s
build (gradle, 11, ubuntu-latest)	1m 13s
build (maven, 21, ubuntu-latest)	46s
build (gradle, 21, ubuntu-latest)	1m 14s
build (gradle, 17, windows-latest)	2m 56s
build (maven, 11, windows-latest)	1m 40s
build (gradle, 24, ubuntu-latest)	1m 39s
build (npm, 11, ubuntu-latest)	3m 12s
build (shfmt, 11, ubuntu-latest, v3.8.0)	1m 16s
	24m 35s

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