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 @@ [email protected]:
     react-is "^16.6.0"
     react-lifecycles-compat "^3.0.0"
 
-[email protected]:
-  version "4.4.0"
-  resolved "https://registry.yarnpkg.com/react-router-dom/-/react-router-dom-4.4.0.tgz#fad67b46375f7081a76d1c92a83a92d28b5abc35"
+[email protected]-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"
 
-[email protected]:
+[email protected], 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 @@ [email protected]:
     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"
-
 [email protected]:
   version "2.1.8"
   resolved "https://registry.yarnpkg.com/react-scripts/-/react-scripts-2.1.8.tgz#21195bb928b2c0462aa98b2d32edf7d034cff2a9"