chore(deps): update dependency vitepress to ^1.5.0 #2553

Job	Run time
lint:hbs	29s
lint:types	28s
lint:css	22s
lint:js	40s
test	44s
Ember Try (ember-3.28)	39s
Ember Try (ember-4.12)	41s
Ember Try (ember-5.4)	51s
Ember Try (ember-5.8)	1m 0s
Ember Try (ember-5.12)	56s
Ember Try (ember-release)	39s
Ember Try (ember-beta)	37s
Ember Try (ember-canary)	39s
Ember Try (embroider-safe)	54s
Ember Try (embroider-optimized)	1m 19s
	10m 58s

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