chore(deps-dev): bump @types/react-router-dom from 4.3.3 to 4.3.4 (#39)

Bumps [@types/react-router-dom](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/react-router-dom) from 4.3.3 to 4.3.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/react-router-dom)

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

Author: dependabot-preview[bot]

package.json

@@ -49,7 +49,7 @@
     "@types/history": "^4.7.2",
     "@types/leaflet": "^1.4.4",
     "@types/react-leaflet": "^2.2.1",
-    "@types/react-router-dom": "^4.3.3",
+    "@types/react-router-dom": "^4.3.4",
     "@types/styled-components": "^4.1.16",
     "apollo": "2.13.1"
   }

yarn.lock

@@ -1683,10 +1683,10 @@
     "@types/prop-types" "*"
     "@types/react" "*"
 
-"@types/react-router-dom@^4.3.3":
-  version "4.3.3"
-  resolved "https://registry.yarnpkg.com/@types/react-router-dom/-/react-router-dom-4.3.3.tgz#7837e3e9fefbc84a8f6c8a51dca004f4e83e94e3"
-  integrity sha512-xj0DmFjgvAqRfh/kJPO7apD5G30yPQe+8slu/dugioQOkdKpyzc4Fgk4hoTelm6CSHz7pI2PPsW5+Y6GRBF2zw==
+"@types/react-router-dom@^4.3.4":
+  version "4.3.4"
+  resolved "https://registry.yarnpkg.com/@types/react-router-dom/-/react-router-dom-4.3.4.tgz#63a7a8558129d2f4ff76e4bdd099bf4b98e25a0d"
+  integrity sha512-xrwaWHpnxKk/TTRe7pmoGy3E4SyF/ojFqNfFJacw7OLdfLXRvGfk4r/XePVaZNVfeJzL8fcnNilPN7xOdJ/vGw==
   dependencies:
     "@types/history" "*"
     "@types/react" "*"