feat(vercel): skip deployments when only README.md or demo.html changed

Author: allocsys

vercel.json

@@ -5,5 +5,6 @@
       "main": true,
       "feature/*": false
     }
-  }
+  },
+  "ignoreCommand": "bash -c '! git diff --name-only HEAD^ HEAD | grep -qvE \"^(README\\.md|demo\\.html)$\"'"
 }