build(deps-dev): update dependency eslint-config-kentcdodds to v21

Author: renovate[bot]

package.json

@@ -131,7 +131,7 @@
     "@babel/preset-env": "^7.27.2",
     "@types/cross-spawn": "^6.0.6",
     "depcheck": "^1.4.7",
-    "eslint-config-kentcdodds": "^20.5.0",
+    "eslint-config-kentcdodds": "^21.0.0",
     "husky": "^8.0.3",
     "jest-in-case": "^1.0.2",
     "npm-run-all": "^4.1.5",