chore(gh-actions-deps): update actions/checkout action to v4.2.1 in all dependant reusable workflows #476

Job	Run time
test-code / test-fast (ubuntu)	1m 2s
test-code / test-general (ubuntu, 3.12)	1m 42s
test-code / test-fast (windows)	2m 12s
test-code / test-general (windows, 3.12)	4m 58s
test-code / test-fast (macos)	1m 3s
test-code / test-general (macos, 3.12)	2m 23s
test-code / Test Results	5s
test-code / check-tests-passed	2s
	13m 27s

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