⬆️ upgrade eslint-plugin-mdx to v3

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "eslint": "^8.22.0",
     "eslint-config-next": "^12.2.5",
     "eslint-config-prettier": "^9.0.0",
-    "eslint-plugin-mdx": "^2.0.2",
+    "eslint-plugin-mdx": "^3.0.0",
     "eslint-plugin-prettier": "^5.0.0",
     "eslint-plugin-react": "^7.30.1",
     "postcss": "^8.4.16",