chore(deps): update commitlint monorepo to v8

Author: renovate-bot

package.json

@@ -61,8 +61,8 @@
     "consola": "2.3.0"
   },
   "devDependencies": {
-    "@commitlint/cli": "^7.2.1",
-    "@commitlint/config-conventional": "^7.1.2",
+    "@commitlint/cli": "^8.0.0",
+    "@commitlint/config-conventional": "^8.0.0",
     "@nuxtjs/eslint-config": "^0.0.1",
     "babel-eslint": "^10.0.1",
     "codecov": "^3.1.0",