Update deploy-to-gh-pages.yml

Author: Roshanjossey

.github/workflows/deploy-to-gh-pages.yml

@@ -18,6 +18,8 @@ jobs:
         uses: actions/checkout@v4
       - name: Install, build, and upload your site output
         uses: withastro/action@v2
+        with:
+            package-manager: pnpm@latest
 
   deploy:
     needs: build