Bump react-overlays from 0.8.3 to 0.9.1 (#12298)

Bumps [react-overlays](https://github.com/react-bootstrap/react-overlays) from 0.8.3 to 0.9.1.
- [Release notes](https://github.com/react-bootstrap/react-overlays/releases)
- [Changelog](https://github.com/react-bootstrap/react-overlays/blob/master/CHANGELOG.md)
- [Commits](https://github.com/react-bootstrap/react-overlays/compare/v0.8.3...v0.9.1)

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

package.json

@@ -135,7 +135,7 @@
     "react-masonry-infinite": "^1.2.2",
     "react-motion": "^0.5.2",
     "react-notification": "^6.8.4",
-    "react-overlays": "^0.8.3",
+    "react-overlays": "^0.9.1",
     "react-redux": "^7.1.1",
     "react-redux-loading-bar": "^4.0.8",
     "react-router-dom": "^4.1.1",