chore(deps): update commitlint monorepo to v20

Author: renovate[bot]

package.json

@@ -29,8 +29,8 @@
   "devDependencies": {
     "@babel/core": "^7.5.5",
     "@babel/preset-env": "^7.5.5",
-    "@commitlint/cli": "^8.1.0",
-    "@commitlint/config-conventional": "^8.1.0",
+    "@commitlint/cli": "^20.3.0",
+    "@commitlint/config-conventional": "^20.3.0",
     "@nuxtjs/eslint-config": "^1.1.2",
     "babel-eslint": "^10.0.3",
     "babel-jest": "^24.9.0",