ci: update pnpm version

Author: phndiaye

.github/workflows/ci.yml

@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: pnpm/action-setup@v2
         with:
-          version: 8
+          version: 9
       - uses: actions/setup-node@v3
         with:
           node-version: '${{ env.NODE_VERSION }}'