Bump mobx-react from 4.3.5 to 4.4.3 (#16)

Bumps [mobx-react](https://github.com/mobxjs/mobx-react) from 4.3.5 to 4.4.3.
- [Release notes](https://github.com/mobxjs/mobx-react/releases)
- [Changelog](https://github.com/mobxjs/mobx-react/blob/master/CHANGELOG.md)
- [Commits](mobxjs/mobx-react@4.3.5...4.4.3)

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

package.json

@@ -43,7 +43,7 @@
     "@parity/mobx": "^1.1.2",
     "@parity/ui": "^3.1.11",
     "mobx": "^3.6.2",
-    "mobx-react": "^4.3.5",
+    "mobx-react": "^4.4.3",
     "prop-types": "^15.6.2",
     "react": "^16.6.0",
     "react-dom": "^16.2.0",

yarn.lock

@@ -4840,9 +4840,9 @@ mobx-react@4.0.3:
   dependencies:
     hoist-non-react-statics "^1.2.0"
 
-mobx-react@^4.3.5:
-  version "4.3.5"
-  resolved "https://registry.yarnpkg.com/mobx-react/-/mobx-react-4.3.5.tgz#76853f2f2ef4a6f960c374bcd9f01e875929c04c"
+mobx-react@^4.4.3:
+  version "4.4.3"
+  resolved "https://registry.yarnpkg.com/mobx-react/-/mobx-react-4.4.3.tgz#baa9ec41165ee35ae7b9df19bca10190f36f117e"
   dependencies:
     hoist-non-react-statics "^2.3.1"