chore: update dependency @commitlint/config-conventional to v20

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -28,7 +28,7 @@
     "strong-globalize": "^6.0.6"
   },
   "devDependencies": {
-    "@commitlint/config-conventional": "^19.8.1",
+    "@commitlint/config-conventional": "^20.0.0",
     "eslint": "^8.57.1",
     "eslint-config-loopback": "^13.1.0",
     "loopback-datasource-juggler": "^5.2.1",