chore(deps): update commitlint monorepo to v8

Author: renovate-bot

package.json

@@ -59,8 +59,8 @@
   "devDependencies": {
     "@babel/core": "^7.3.4",
     "@babel/preset-env": "^7.3.4",
-    "@commitlint/cli": "^7.5.2",
-    "@commitlint/config-conventional": "^7.5.0",
+    "@commitlint/cli": "^8.2.0",
+    "@commitlint/config-conventional": "^8.2.0",
     "@nuxtjs/eslint-config": "^0.0.1",
     "@vue/server-test-utils": "1.0.0-beta.29",
     "@vue/test-utils": "1.0.0-beta.29",