Bump react from 16.11.0 to 16.12.0

Bumps [react](https://github.com/facebook/react/tree/HEAD/packages/react) from 16.11.0 to 16.12.0.
- [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/HEAD/packages/react)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package-lock.json

@@ -61,7 +61,7 @@
     "moment": "2.24.0",
     "node-emoji": "1.10.0",
     "prop-types": "15.7.2",
-    "react": "16.11.0",
+    "react": "16.12.0",
     "react-dom": "16.11.0",
     "react-relay": "5.0.0",
     "react-select": "1.2.1",