pnpm v9 to match local

Author: reecelikesramen

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v2
         with:
-          version: 8
+          version: 9
 
       - name: Install dependencies
         working-directory: site