Bump shelljs from 0.8.2 to 0.8.5 in /front-end (#549)

Bumps [shelljs](https://github.com/shelljs/shelljs) from 0.8.2 to 0.8.5.
- [Release notes](https://github.com/shelljs/shelljs/releases)
- [Changelog](https://github.com/shelljs/shelljs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/shelljs/shelljs/compare/v0.8.2...v0.8.5)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/front-end/package.json b/front-end/package.json
index 65b815b..36d6da8 100644
--- a/front-end/package.json
+++ b/front-end/package.json
@@ -103,7 +103,7 @@
     "script-loader": "0.7.2",
     "semver": "5.5.0",
     "serve-static": "1.13.2",
-    "shelljs": "0.8.2",
+    "shelljs": "0.8.5",
     "svg-sprite-loader": "3.8.0",
     "svgo": "1.0.5",
     "uglifyjs-webpack-plugin": "1.2.7",