chore(deps): update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -39,7 +39,7 @@
     "browser-sync": "3.0.4",
     "css-loader": "^6.0.0",
     "del": "2.2.2",
-    "eslint": "^8.35.0",
+    "eslint": "^9.0.0",
     "eslint-config-edx": "4.0.4",
     "gulp": "^4.0.2",
     "gulp-gh-pages": "0.5.4",