Update commitlint monorepo to v12

Author: renovate-bot

package.json

@@ -43,8 +43,8 @@
     "rxjs": "6.6.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "8.3.5",
-    "@commitlint/config-conventional": "8.3.4",
+    "@commitlint/cli": "12.1.4",
+    "@commitlint/config-conventional": "12.1.4",
     "@nestjs/cli": "7.0.0",
     "@nestjs/testing": "7.0.3",
     "@types/express": "4.17.1",