Merge pull request #587 from parity-js/dependabot/npm_and_yarn/react-intl-3.4.0

Author: dependabot-preview[bot]

package-lock.json

@@ -201,7 +201,7 @@
     "query-string": "6.8.3",
     "react": "16.11.0",
     "react-dom": "16.10.2",
-    "react-intl": "3.3.2",
+    "react-intl": "3.4.0",
     "react-markdown": "4.2.2",
     "react-progress-bar.js": "0.2.3",
     "react-redux": "^5.0.6",