docs: missing pnpm version on github actions template (#194)

Author: edimitchel

docs/content/1.docs/1.getting-started/3.deploy.md

@@ -71,6 +71,7 @@ jobs:
       - uses: pnpm/action-setup@v4
         name: Install pnpm
         with:
+          version: 9
           run_install: false
       - name: Install Node.js
         uses: actions/setup-node@v4