build: bump react-dom from 16.2.0 to 16.3.0 (#1246)

Bumps [react-dom](https://github.com/facebook/react) from 16.2.0 to 16.3.0.
- [Release notes](https://github.com/facebook/react/releases)
- [Changelog](https://github.com/facebook/react/blob/master/CHANGELOG.md)
- [Commits](https://github.com/facebook/react/compare/v16.2.0...v16.3.0)

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

package.json

@@ -54,7 +54,7 @@
     "qrcode.react": "^0.8.0",
     "rc-progress": "^2.0.6",
     "react": "^16.2.0",
-    "react-dom": "^16.2.0",
+    "react-dom": "^16.3.0",
     "react-feather": "^1.0.8",
     "react-markdown": "^2.5.0",
     "react-modal": "^3.1.7",

yarn.lock

@@ -7362,9 +7362,9 @@ rc@^1.0.1, rc@^1.1.2, rc@^1.1.6, rc@^1.1.7, rc@^1.2.1:
     minimist "^1.2.0"
     strip-json-comments "~2.0.1"
 
-react-dom@^16.2.0:
-  version "16.2.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.2.0.tgz#69003178601c0ca19b709b33a83369fe6124c044"
+react-dom@^16.3.0:
+  version "16.3.0"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.3.0.tgz#b318e52184188ecb5c3e81117420cca40618643e"
   dependencies:
     fbjs "^0.8.16"
     loose-envify "^1.1.0"