chore(deps-dev): bump ember-source from 5.3.0 to 5.4.0 #982

Job	Run time
Tests	58s
Floating Dependencies	1m 0s
Type checking - [email protected]	51s
ember-try: ember-lts-3.28	1m 2s
Type checking - [email protected]	49s
ember-try: ember-lts-4.4	52s
Type checking - typescript@next	46s
ember-try: ember-lts-4.8	54s
ember-try: ember-lts-4.12	59s
ember-try: ember-release	1m 6s
ember-try: ember-beta	1m 3s
ember-try: ember-canary	58s
ember-try: ember-classic	54s
ember-try: embroider-safe	47s
ember-try: embroider-optimized	41s
	13m 40s

Provide feedback