[monorepo] run prettier on Jenkinsfiles (#28565)

* [monorepo] consolidate .editorconfig files at the root

* [monorepo] run prettier on Jenkinsfiles

* [saas-e2e] increase timeout for XeTeX compile

GitOrigin-RevId: 48aa82f7c81611899837753ae92c7732998d4ca5

package.json

@@ -23,6 +23,7 @@
     "eslint-plugin-promise": "^6.0.0",
     "eslint-plugin-unicorn": "^56.0.0",
     "prettier": "3.6.2",
+    "prettier-plugin-groovy": "0.2.1",
     "typescript": "^5.8.3"
   },
   "engines": {