Bump ua-parser-js from 0.7.21 to 0.7.31

Bumps [ua-parser-js](https://github.com/faisalman/ua-parser-js) from 0.7.21 to 0.7.31.
- [Release notes](https://github.com/faisalman/ua-parser-js/releases)
- [Commits](https://github.com/faisalman/ua-parser-js/compare/0.7.21...0.7.31)

---
updated-dependencies:
- dependency-name: ua-parser-js
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -35,7 +35,7 @@
     "eslint-plugin-vue": "^5.2.3",
     "jest": "^24.9.0",
     "jest-serializer-vue": "^2.0.2",
-    "node-sass": "^7.0.0",
+    "node-sass": "^4.12.0",
     "nodemon": "^1.18.9",
     "prettier": "^1.18.2",
     "pug": "^2.0.3",