Update dependency @wordpress/eslint-plugin to v18

Author: renovate[bot]

package.json

@@ -12,7 +12,7 @@
     "clean-dist": "rm -rf ./dist"
   },
   "devDependencies": {
-    "@wordpress/eslint-plugin": "^14.0.0",
+    "@wordpress/eslint-plugin": "^18.0.0",
     "10up-toolkit": "^5.1.0"
   },
   "dependencies": {