Bump superagent from 1.8.5 to 7.0.2 in /navbar/ui

Bumps [superagent](https://github.com/visionmedia/superagent) from 1.8.5 to 7.0.2.
- [Release notes](https://github.com/visionmedia/superagent/releases)
- [Changelog](https://github.com/visionmedia/superagent/blob/master/HISTORY.md)
- [Commits](https://github.com/visionmedia/superagent/commits/v7.0.2)

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

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Author: dependabot[bot]

navbar/ui/package-lock.json

@@ -29,7 +29,7 @@
     "redux-actions": "^0.7.0",
     "redux-promise": "^0.5.0",
     "redux-thunk": "^1.0.3",
-    "superagent": "^1.3.0",
+    "superagent": "^7.0.2",
     "navigation-widget": "^1.0.14"
   },
   "devDependencies": {}