fix(deps): update dependency execa to v9

Author: renovate[bot]

create-plainweb/package.json

@@ -26,7 +26,7 @@
     "@remix-run/web-fetch": "^4.4.2",
     "arg": "^5.0.2",
     "chalk": "4.1.2",
-    "execa": "5.1.1",
+    "execa": "9.3.0",
     "fs-extra": "^11.2.0",
     "gunzip-maybe": "^1.4.2",
     "ora": "^8.0.1",