chore(deps): re-add the specific PNPM version for the deploy workflow

.github/workflows/deploy.yaml

@@ -33,6 +33,7 @@ jobs:
         uses: withastro/action@v2
         with:
           path: ./docs # The root location of your Astro project inside the repository. (optional)
+          package-manager: [email protected] # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
 
   deploy:
     needs: build