Bump the gradle plugin major version to reflect the breaking change. #1083

Job	Run time
spotlessCheck assemble testClasses	1m 38s
build (maven, 11, ubuntu-latest)	6m 44s
build (maven, 17, ubuntu-latest)	1m 4s
build (gradle, 11, ubuntu-latest)	4m 33s
build (gradle, 17, ubuntu-latest)	7m 35s
build (maven, 11, windows-latest)	11m 14s
build (gradle, 17, windows-latest)	12m 35s
build (npm, 11, ubuntu-latest)	1m 12s
	46m 35s

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