chore(deps-dev): bump mocha from 6.1.2 to 6.1.3

Bumps [mocha](https://github.com/mochajs/mocha) from 6.1.2 to 6.1.3.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v6.1.2...v6.1.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot-support

package-lock.json

@@ -25,7 +25,7 @@
   "homepage": "https://github.com/eXist-db/documentation#readme",
   "devDependencies": {
     "cpx": "^1.5.0",
-    "mocha": "^6.1.2"
+    "mocha": "^6.1.3"
   },
   "dependencies": {
     "@neos21/bootstrap3-glyphicons": "^1.0.3",