fix(deps): roll back dependency react-router to 4.4.0-beta.8

Author: renovate-bot

package.json

@@ -19,7 +19,7 @@
  "react": "16.8.4",
  "react-dom": "16.8.4",
  "react-redux": "5.1.1",
- "react-router": "4.4.0",
+ "react-router": "4.4.0-beta.8",
  "react-router-dom": "4.4.0",
  "redux": "4.0.1",
  "redux-thunk": "2.3.0",

yarn.lock

@@ -7518,7 +7518,22 @@ react-router-redux@^4.0.0:
  version "4.0.8"
  resolved "https://registry.yarnpkg.com/react-router-redux/-/react-router-redux-4.0.8.tgz#227403596b5151e182377dab835b5d45f0f8054e"
 
-react-router@4.4.0, react-router@^4.4.0:
+react-router@4.4.0-beta.8:
+ version "4.4.0-beta.8"
+ resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.4.0-beta.8.tgz#6001c87bd191961adc25e84e495bb2bf4d62e59d"
+ dependencies:
+ "@babel/runtime" "^7.1.2"
+ create-react-context "^0.2.2"
+ history "^4.9.0"
+ hoist-non-react-statics "^3.1.0"
+ loose-envify "^1.3.1"
+ path-to-regexp "^1.7.0"
+ prop-types "^15.6.2"
+ react-is "^16.6.0"
+ tiny-invariant "^1.0.2"
+ tiny-warning "^1.0.0"
+
+react-router@^4.4.0:
  version "4.4.0"
  resolved "https://registry.yarnpkg.com/react-router/-/react-router-4.4.0.tgz#e8b8b88329f564d4c48b7ee631b10310188c6888"
  dependencies: