CI/CD

Bump execa from 5.1.1 to 8.0.1 #1720

Job	Run time
Lint files	52s
Test addon (floating dependencies) (ember)	3m 21s
Test addon (floating dependencies) (node)	1m 21s
Test addon (floating dependencies) (test-apps)	1m 32s
Test addon (locked dependencies) (ember)	59s
Test addon (locked dependencies) (node)	45s
Test addon (locked dependencies) (test-apps)	59s
Test compatibility (ember-lts-4.4)	2m 48s
Test compatibility (ember-lts-4.8)	2m 58s
Test compatibility (ember-release)	2m 32s
Test compatibility (ember-beta)	2m 37s
Test compatibility (ember-canary)	2m 53s
Test compatibility (embroider-safe)	2m 38s
Deploy app	0s
	26m 15s

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