Replaced lerna-changelog with changesets. Installed update-workspace-root-version. #1011

Job	Run time
Build (docs-app)	47s
Test (packages/ember-container-query)	25s
Lint (docs-app)	40s
Test (test-app)	38s
Test compatibility (ember-lts-4.4)	54s
Lint (packages/ember-container-query)	39s
Test compatibility (ember-lts-4.8)	53s
Lint (test-app)	26s
Test compatibility (ember-lts-4.12)	48s
Test compatibility (ember-lts-5.4)	53s
Test compatibility (ember-lts-5.8)	1m 2s
Test compatibility (ember-release)	54s
Test compatibility (ember-beta)	53s
Test compatibility (ember-canary)	1m 13s
Test compatibility (embroider-safe)	1m 6s
Test compatibility (embroider-optimized)	1m 9s
Test (docs-app) (w1-h1)	38s
Test (docs-app) (w2-h1)	1s
Test (docs-app) (w3-h1)	1s
Test (docs-app) (w1-h2)	46s
Test (docs-app) (w2-h2)	1s
Test (docs-app) (w3-h2)	1s
Test (docs-app) (w1-h3)	49s
Test (docs-app) (w2-h3)	1s
Test (docs-app) (w3-h3)	1s
	15m 39s

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