setup pnpm

Author: joahg

.github/workflows/pages.yaml

@@ -7,6 +7,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - uses: pnpm/action-setup@v4
+        with:
+          version: 10
       - name: Install dependencies
         run: pnpm i
       - name: Build application