Fix CI #581

Job	Run time
Base Tests (14)	1m 11s
Base Tests (16)	1m 17s
Floating Dependencies (14)	44s
Floating Dependencies (16)	54s
Compatibility (ember-3.25)	1m 52s
Compatibility (ember-3.28-lts)	2m 11s
Compatibility (first-inert)	1m 51s
Compatibility (ember-release)	1m 55s
Compatibility (ember-beta)	2m 6s
Compatibility (ember-canary)	2m 10s
Compatibility (ember-could-get-used-to-this)	2m 13s
Compatibility (embroider-safe)	2m 9s
Compatibility (embroider-optimized)	2m 6s
Release	0s
ember-cli-update	0s
	22m 39s

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