Updated visual regression assertions #1019

Job	Run time
Test (packages/ember-container-query)	17s
Build (docs-app)	41s
Test (test-app)	36s
Lint (docs-app)	29s
Test compatibility (ember-lts-4.4)	56s
Lint (packages/ember-container-query)	20s
Test compatibility (ember-lts-4.8)	1m 7s
Lint (test-app)	24s
Test compatibility (ember-lts-4.12)	58s
Test compatibility (ember-lts-5.4)	1m 3s
Test compatibility (ember-lts-5.8)	48s
Test compatibility (ember-release)	54s
Test compatibility (ember-beta)	52s
Test compatibility (ember-canary)	53s
Test compatibility (embroider-safe)	54s
Test compatibility (embroider-optimized)	1m 13s
Test (docs-app) (w1-h1)	54s
Test (docs-app) (w2-h1)	1m 8s
Test (docs-app) (w3-h1)	52s
Test (docs-app) (w1-h2)	45s
Test (docs-app) (w2-h2)	1m 8s
Test (docs-app) (w3-h2)	47s
Test (docs-app) (w1-h3)	51s
Test (docs-app) (w2-h3)	46s
Test (docs-app) (w3-h3)	1m 6s
	20m 42s

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