Upgrade pnpm version from 8 to 9

Author: vangleer

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/checkout@v3
 
       - name: Install pnpm
-        run: npm i pnpm@8 -g
+        run: npm i pnpm@9 -g
 
       - uses: actions/setup-node@v3
         with: