build(deps): bump react from 16.6.1 to 16.6.3 in /ui

Bumps [react](https://github.com/facebook/react) from 16.6.1 to 16.6.3.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/commits)

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

ui/package.json

@@ -27,7 +27,7 @@
     "object-hash": "1.3.1",
     "prop-types": "15.6.2",
     "qs": "6.5.2",
-    "react": "16.6.1",
+    "react": "16.6.3",
     "react-autosuggest": "9.4.2",
     "react-datepicker": "1.8.0",
     "react-dom": "16.6.1",

ui/yarn.lock

@@ -9395,7 +9395,7 @@ react-transition-group@2.5.0, react-transition-group@^2.2.1:
     prop-types "^15.6.2"
     react-lifecycles-compat "^3.0.4"
 
-"react@15.x.x - 16.x.x":
+"react@15.x.x - 16.x.x", react@16.6.3:
   version "16.6.3"
   resolved "https://registry.yarnpkg.com/react/-/react-16.6.3.tgz#25d77c91911d6bbdd23db41e70fb094cc1e0871c"
   integrity sha512-zCvmH2vbEolgKxtqXL2wmGCUxUyNheYn/C+PD1YAjfxHC54+MhdruyhO7QieQrYsYeTxrn93PM2y0jRH1zEExw==
@@ -9405,16 +9405,6 @@ react-transition-group@2.5.0, react-transition-group@^2.2.1:
     prop-types "^15.6.2"
     scheduler "^0.11.2"
 
-react@16.6.1:
-  version "16.6.1"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.6.1.tgz#ee2aef4f0a09e494594882029821049772f915fe"
-  integrity sha512-OtawJThYlvRgm9BXK+xTL7BIlDx8vv21j+fbQDjRRUyok6y7NyjlweGorielTahLZHYIdKUoK2Dp9ByVWuMqxw==
-  dependencies:
-    loose-envify "^1.1.0"
-    object-assign "^4.1.1"
-    prop-types "^15.6.2"
-    scheduler "^0.11.0"
-
 read-pkg-up@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/read-pkg-up/-/read-pkg-up-1.0.1.tgz#9d63c13276c065918d57f002a57f40a1b643fb02"