chore(deps-dev): bump shelljs from 0.7.8 to 0.8.5 in /web

Bumps [shelljs](https://github.com/shelljs/shelljs) from 0.7.8 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/v0.7.8...v0.8.5)

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

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

web/package.json

@@ -59,7 +59,7 @@
     "rimraf": "^2.6.0",
     "selenium-server": "^3.0.1",
     "semver": "^5.3.0",
-    "shelljs": "^0.7.6",
+    "shelljs": "^0.8.5",
     "uglifyjs-webpack-plugin": "^1.1.1",
     "url-loader": "^0.5.8",
     "vue-loader": "^13.3.0",

web/yarn.lock

@@ -6507,9 +6507,9 @@ shebang-regex@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
 
-shelljs@^0.7.6:
-  version "0.7.8"
-  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.7.8.tgz#decbcf874b0d1e5fb72e14b164a9683048e9acb3"
+shelljs@^0.8.5:
+  version "0.8.5"
+  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.5.tgz#de055408d8361bed66c669d2f000538ced8ee20c"
   dependencies:
     glob "^7.0.0"
     interpret "^1.0.0"