chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -43,8 +43,8 @@
     "simple-git": "^3.28.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "^19.8.1",
-    "@commitlint/config-conventional": "^19.8.1",
+    "@commitlint/cli": "^20.0.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@eslint/js": "^9.35.0",
     "@types/node": "^24.3.1",
     "@typescript-eslint/eslint-plugin": "^8.43.0",