Update local development to latest ruby/rails, address console warnings #7412

Job	Run time
Test compatibility with Primer ViewComponents (main)	8s
benchmark	1m 38s
test (6.1, 3.0, capture_patch_enabled)	8s
test (6.1, 3.0, capture_patch_disabled)	8s
test (7.0, 3.1, capture_patch_enabled)	41s
test (7.0, 3.1, capture_patch_disabled)	45s
test (7.1, 3.2, capture_patch_enabled)	46s
test (7.1, 3.2, capture_patch_disabled)	48s
test (7.2, 3.3, capture_patch_disabled)	39s
test (7.2, 3.3, capture_patch_enabled)	41s
test (8.0, 3.3, capture_patch_disabled)	38s
test (8.0, 3.3, capture_patch_enabled)	42s
test (8.0, 3.4, capture_patch_disabled)	40s
test (8.0, 3.4, capture_patch_enabled)	40s
test (main, head, capture_patch_disabled)	47s
test (main, head, capture_patch_enabled)	34s
coverage	0s
	10m 23s

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