Update react requirement to ^16.3.2 in /services/client (#79)

Updates the requirements on [react](https://github.com/facebook/react) to permit the latest version.
- [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/v16.3.2)

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

services/client/package.json

@@ -26,7 +26,7 @@
     "promise": "8.0.1",
     "prop-types": "^15.6.0",
     "query-string": "^6.0.0",
-    "react": "^15.6.2",
+    "react": "^16.3.2",
     "react-dev-utils": "^5.0.1",
     "react-dom": "^16.3.2",
     "react-fontawesome": "^1.6.1",