chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package-lock.json

@@ -41,8 +41,8 @@
   "devDependencies": {
     "@aws-cdk/assert": "2.68.0",
     "@biomejs/biome": "2.2.5",
-    "@commitlint/cli": "19.8.1",
-    "@commitlint/config-conventional": "19.8.1",
+    "@commitlint/cli": "20.1.0",
+    "@commitlint/config-conventional": "20.0.0",
     "@types/jest": "30.0.0",
     "@types/node": "24.6.2",
     "aws-cdk-lib": "2.219.0",