build: update rules_angular digest to f568493 #2357

Job	Run time
list	25s
workflow (build-cli)	1m 46s
workflow (build-unit-tests)	2m 27s
workflow (devkit-core-tests)	1m 24s
workflow (modules-builder-tests)	1m 54s
workflow (devkit-core-tests-rerun)	1m 33s
	9m 29s

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