chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -40,8 +40,8 @@
     "faker": "5.5.3"
   },
   "devDependencies": {
-    "@commitlint/cli": "^16.1.0",
-    "@commitlint/config-conventional": "^16.0.0",
+    "@commitlint/cli": "^20.1.0",
+    "@commitlint/config-conventional": "^20.0.0",
     "@ember/optional-features": "^2.0.0",
     "@ember/test-helpers": "^2.6.0",
     "@embroider/test-setup": "^0.50.2",