Bump nconf from 0.10.0 to 0.11.4

Bumps [nconf](https://github.com/flatiron/nconf) from 0.10.0 to 0.11.4.
- [Release notes](https://github.com/flatiron/nconf/releases)
- [Changelog](https://github.com/indexzero/nconf/blob/master/CHANGELOG.md)
- [Commits](indexzero/nconf@0.10.0...v0.11.4)

---
updated-dependencies:
- dependency-name: nconf
  dependency-type: direct:production
...

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

Author: dependabot[bot]

package-lock.json

@@ -32,7 +32,7 @@
     "js-yaml": "^3.13.1",
     "log4js": "^6.1.0",
     "mustache": "^3.0.1",
-    "nconf": "^0.10.0",
+    "nconf": "^0.11.4",
     "optimist": "^0.6.0",
     "path": "0.4.9",
     "q": "1.5.x",