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Declare actionview as explicit gem dependency #8363

Job	Run time
test (Rails main, Ruby head)	13s
benchmark	1m 30s
test (Rails 8.0, Ruby 3.4)	29s
test (Rails 7.2, Ruby 3.3)	40s
Test compatibility with Primer ViewComponents (main)	18m 27s
test (Rails 7.1, Ruby 3.2)	49s
coverage	0s
	22m 8s