chore(deps): update pnpm to v9.15.3 #2685

Job	Run time
lint:hbs	27s
lint:js	40s
lint:css	25s
lint:types	30s
test	33s
Ember Try (ember-3.28)	6h 0m 14s
Ember Try (ember-4.12)	55s
Ember Try (ember-5.4)	38s
Ember Try (ember-5.8)	37s
Ember Try (ember-5.12)	38s
Ember Try (ember-release)	37s
Ember Try (ember-beta)	56s
Ember Try (ember-canary)	39s
Ember Try (embroider-safe)	40s
Ember Try (embroider-optimized)	42s
	6h 9m 11s

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