update router-async

Author: olegman

yarn.lock

@@ -96,8 +96,8 @@ [email protected]:
     object-assign "^4.1.0"
 
 [email protected]:
-  version "0.4.0"
-  resolved "https://registry.yarnpkg.com/router-async/-/router-async-0.4.0.tgz#baa2b1c99af6deff141ff24acd5e7f02e3c757d1"
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/router-async/-/router-async-0.4.1.tgz#f4a9403df1664544005f67961bde3e87b6802b82"
   dependencies:
     path-to-regexp "^1.6.0"
     query-string "^4.2.3"