chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -34,8 +34,8 @@
   },
   "homepage": "https://mfranzke.github.io/datalist-polyfill/demos/",
   "devDependencies": {
-    "@commitlint/cli": "^18.0.0",
-    "@commitlint/config-conventional": "^18.0.0",
+    "@commitlint/cli": "^20.0.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@wdio/cli": "^7.19.5",
     "@wdio/dot-reporter": "^8.0.0",
     "@wdio/local-runner": "^7.19.5",