Bump angular from 1.6.9 to 1.8.0 in /priv/public/ui

Bumps [angular](https://github.com/angular/angular.js) from 1.6.9 to 1.8.0.
- [Release notes](https://github.com/angular/angular.js/releases)
- [Changelog](https://github.com/angular/angular.js/blob/master/CHANGELOG.md)
- [Commits](angular/angular.js@v1.6.9...v1.8.0)

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

Author: dependabot[bot]

priv/public/ui/package-lock.json

@@ -21,7 +21,7 @@
     "@uirouter/angularjs": "1.0.25",
     "@uirouter/core": "6.0.4",
     "@uirouter/rx": "0.6.4",
-    "angular": "1.6.9",
+    "angular": "1.8.0",
     "angular-animate": "1.6.9",
     "angular-messages": "1.6.9",
     "angular-sanitize": "1.6.9",