Update dependency @patternfly/patternfly-a11y to v5 #381

Job	Run time
call-build-lint-test-workflow / build	1m 38s
call-build-lint-test-workflow / test_jest	1m 19s
call-build-lint-test-workflow / test_a11y	1m 45s
call-build-lint-test-workflow / lint	22s
	5m 4s

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