Bump react-dom from 16.4.0 to 16.4.2

Bumps [react-dom](https://github.com/facebook/react/tree/HEAD/packages/react-dom) from 16.4.0 to 16.4.2.
- [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/v16.4.2/packages/react-dom)

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

Author: dependabot[bot]

package.json

@@ -7,7 +7,7 @@
     "imports-loader": "0.8.0",
     "prop-types": "^15.6.1",
     "react": "^16.4.0",
-    "react-dom": "^16.4.0",
+    "react-dom": "^16.4.2",
     "react-on-rails": "11.0.7"
   },
   "devDependencies": {

yarn.lock

@@ -1399,7 +1399,7 @@ compression-webpack-plugin@^1.1.11:
 
 compression@^1.5.2:
   version "1.7.2"
-  resolved "http://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
+  resolved "https://registry.npmjs.org/compression/-/compression-1.7.2.tgz#aaffbcd6aaf854b44ebb280353d5ad1651f59a69"
   dependencies:
     accepts "~1.3.4"
     bytes "3.0.0"
@@ -4786,9 +4786,9 @@ rc@^1.1.7:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-dom@^16.4.0:
-  version "16.4.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.4.0.tgz#099f067dd5827ce36a29eaf9a6cdc7cbf6216b1e"
+react-dom@^16.4.2:
+  version "16.4.2"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.4.2.tgz#4afed569689f2c561d2b8da0b819669c38a0bda4"
   dependencies:
     fbjs "^0.8.16"
     loose-envify "^1.1.0"