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

@@ -88,7 +88,7 @@
     "pa11y": "^5.3.0",
     "pa11y-reporter-json": "^1.0.0",
     "sass-loader": "^8.0.0",
-    "shelljs": "^0.8.3",
+    "shelljs": "^0.8.5",
     "typescript": "~3.5.3",
     "vue-cli-plugin-axios": "0.0.4",
     "vue-template-compiler": "^2.6.10"