Test

Update dependency @glint/environment-ember-loose to v1.2.1 #2689

Job	Run time
Tests	1m 54s
Floating dependencies	1m 21s
ember-try: ember-lts-3.28	2m 6s
ember-try: ember-lts-4.4	2m 13s
ember-try: ember-release	1m 37s
ember-try: ember-beta	1m 40s
ember-try: ember-canary	2m 6s
ember-try: embroider-safe	1m 43s
ember-try: embroider-optimized	1m 50s
ember-try: ember-classic	1m 41s
	18m 11s

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