Bump codemirror from 5.42.2 to 5.58.2 in /ait/gui/static

Bumps [codemirror](https://github.com/codemirror/CodeMirror) from 5.42.2 to 5.58.2.
- [Release notes](https://github.com/codemirror/CodeMirror/releases)
- [Changelog](https://github.com/codemirror/CodeMirror/blob/master/CHANGELOG.md)
- [Commits](codemirror/codemirror5@5.42.2...5.58.2)

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

Author: dependabot[bot]

ait/gui/static/package-lock.json

@@ -17,7 +17,7 @@
     "babel-preset-es2015": "^6.18.0",
     "bootstrap": "^3.3.7",
     "chai": "^3.5.0",
-    "codemirror": "^5.26.0",
+    "codemirror": "^5.58.2",
     "css-loader": "^0.26.0",
     "dygraphs": "^2.0.0",
     "extract-text-webpack-plugin": "^1.0.1",