feat(storybook): chromatic a11y testing #18122

Job	Run time
Capture changed-files	3s
Compare / Fetch & validate build artifacts (castastrophe/chore-chromatic-a11y-testing)	3m 35s
Compare / Fetch & validate build artifacts (spectrum-two)	3m 37s
Testing / Chromatic	5m 17s
Publish / Publish	5m 18s
Verify (macos-latest, 20) / Build (macos-latest, 20, false)	4m 31s
Verify (ubuntu-latest, 20) / Build (ubuntu-latest, 20, false)	1s
Publish / Clean up PR deployment	-1s
Lint	0s
Plugin tests	1s
Compare / Compare compiled assets	1s
	22m 23s

Provide feedback