Bump shelljs from 0.8.4 to 0.8.5

Bumps [shelljs](https://github.com/shelljs/shelljs) from 0.8.4 to 0.8.5.
- [Release notes](https://github.com/shelljs/shelljs/releases)
- [Changelog](https://github.com/shelljs/shelljs/blob/master/CHANGELOG.md)
- [Commits](shelljs/shelljs@v0.8.4...v0.8.5)

---
updated-dependencies:
- dependency-name: shelljs
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package-lock.json

@@ -80,7 +80,7 @@
         "rimraf": "^3.0.2",
         "sass": "^1.32.8",
         "sass-loader": "^11.0.1",
-        "shelljs": "^0.8.4",
+        "shelljs": "^0.8.5",
         "url-loader": "^4.1.1",
         "vue-loader": "^15.9.6",
         "vue-style-loader": "^4.1.3",