chore(package): update cz-conventional-changelog to version 3.0.0

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "@vue/eslint-config-prettier": "^4.0.1",
     "@vue/eslint-config-typescript": "^4.0.0",
     "babel-eslint": "^10.0.1",
-    "cz-conventional-changelog": "^2.1.0",
+    "cz-conventional-changelog": "^3.0.0",
     "eslint": "^6.0.0",
     "eslint-plugin-vue": "^5.0.0",
     "jest": "^24.5.0",