chore(deps): update ember testing (major) #3669

Job	Run time
Tests (Floating Dependencies)	1m 1s
Lint Test App	35s
Lint Addon	33s
embroider-optimized - Allowed to fail	45s
Tests (ember-4.0, false)	55s
ember-beta - Allowed to fail	55s
Tests (ember-lts-4.4, false)	1m 0s
ember-canary - Allowed to fail	1m 4s
Tests (ember-lts-4.8, false)	41s
Tests (ember-4.12, false)	46s
Tests (ember-lts-5.8, false)	51s
Tests (ember-default, false)	47s
Tests (ember-release, false)	53s
Tests (embroider-safe, false)	1m 3s
	11m 49s

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