chore(deps): update pnpm to v8.7.5 #2199

Job	Run time
Tests (Floating Dependencies)	1m 40s
Lint Addon	27s
embroider-optimized - Allowed to fail	1m 33s
ember-beta - Allowed to fail	1m 21s
ember-canary - Allowed to fail	1m 36s
Lint Test App	25s
Tests (ember-4.0, false)	1m 11s
Tests (ember-lts-4.4, false)	1m 59s
Tests (ember-lts-4.8, false)	1m 29s
Tests (ember-4.12, false)	1m 4s
Tests (ember-default, false)	1m 9s
Tests (ember-release, false)	1m 26s
Tests (embroider-safe, false)	1m 28s
	16m 48s

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