Test

Update dependency @types/qunit to v2.19.7 (#775) #2774

Job	Run time
Tests	1m 43s
ember-try: ember-lts-3.28	1m 52s
Floating dependencies	1m 27s
ember-try: ember-lts-4.4	1m 46s
ember-try: ember-release	2m 1s
ember-try: ember-beta	1m 54s
ember-try: ember-canary	1m 41s
ember-try: embroider-safe	1m 51s
ember-try: embroider-optimized	1m 42s
ember-try: ember-classic	1m 39s
	17m 36s

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