Update pnpm to v9.12.2 #1178

Job	Run time
Lints	1m 10s
Test ember-scoped-css	1m 0s
Test test-apps/classic-app	1m 51s
Test test-apps/embroider-app	1m 27s
Test test-apps/pods-embroider-app	1m 15s
Test test-apps/pods-classic-app	1m 15s
Floating ember-scoped-css	55s
ember-lts-4.4	1m 55s
Floating test-apps/classic-app	2m 5s
ember-lts-4.12	1m 57s
Floating test-apps/embroider-app	1m 16s
ember-lts-5.4	1m 56s
Floating test-apps/pods-embroider-app	1m 21s
ember-lts-5.8	1m 58s
Floating test-apps/pods-classic-app	1m 10s
ember-release	2m 5s
ember-beta	2m 9s
	26m 45s

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