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

Author: renovate-bot

package.json

@@ -20,7 +20,7 @@
  "react-dom": "16.8.4",
  "react-redux": "5.1.1",
  "react-router": "4.4.0-beta.8",
- "react-router-dom": "4.4.0",
+ "react-router-dom": "4.4.0-beta.8",
  "redux": "4.0.1",
  "redux-thunk": "2.3.0",
  "sanitize.css": "7.0.3",

yarn.lock

@@ -7502,23 +7502,23 @@ react-redux@5.1.1:
  react-is "^16.6.0"
  react-lifecycles-compat "^3.0.0"
 
-react-router-dom@4.4.0:
- version "4.4.0"
- resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.4.0.tgz#fad67b46375f7081a76d1c92a83a92d28b5abc35"
+react-router-dom@4.4.0-beta.8:
+ version "4.4.0-beta.8"
+ resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.4.0-beta.8.tgz#bc85cb4bdc9347f5fe270f3e4555cd5038ae7a9f"
  dependencies:
  "@babel/runtime" "^7.1.2"
  history "^4.8.0-beta.0"
  loose-envify "^1.3.1"
  prop-types "^15.6.2"
- react-router "^4.4.0"
+ react-router "^4.4.0-beta.8"
  tiny-invariant "^1.0.2"
  tiny-warning "^1.0.0"
 
 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-beta.8:
+react-router@4.4.0-beta.8, 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:
@@ -7533,21 +7533,6 @@ react-router@4.4.0-beta.8:
  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:
- "@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-scripts@2.1.8:
  version "2.1.8"
  resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-2.1.8.tgz#21195bb928b2c0462aa98b2d32edf7d034cff2a9"