chore: update pnpm

Author: barelyhuman

.github/workflows/sync.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: pnpm/action-setup@v2.2.2
+      - uses: pnpm/action-setup@v4
         with:
           version: 8.12.0
       - run: pnpm i