Add loads for certain py/java rules (#121) #243

Job	Run time
build (ubuntu-latest, true)	45s
build (ubuntu-latest, false)	1m 46s
integration-tests (ubuntu-latest, 7.4.1, true)	2m 23s
build (windows-2022, true)	21s
integration-tests (ubuntu-latest, 7.4.1, false)	2m 11s
build (windows-2022, false)	21s
integration-tests (ubuntu-latest, 8.0.0rc4, true)	2m 20s
build (macos-13, true)	1m 59s
integration-tests (ubuntu-latest, 8.0.0rc4, false)	2m 8s
integration-tests (windows-2022, 7.4.1, true)	10s
build (macos-13, false)	1m 48s
integration-tests (windows-2022, 7.4.1, false)	11s
integration-tests (windows-2022, 8.0.0rc4, true)	19s
integration-tests (windows-2022, 8.0.0rc4, false)	14s
integration-tests (macos-13, 7.4.1, true)	4m 51s
integration-tests (macos-13, 7.4.1, false)	4m 30s
integration-tests (macos-13, 8.0.0rc4, true)	6m 4s
integration-tests (macos-13, 8.0.0rc4, false)	3m 0s
	35m 21s

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