Updated yarn.lock.

yarn.lock

@@ -447,18 +447,12 @@ dashdash@^1.12.0:
   dependencies:
     assert-plus "^1.0.0"
 
-debug@2.2.0, debug@~2.2.0:
+debug@2.2.0, debug@^2.0.0, debug@^2.1.1, debug@^2.2.0, debug@~2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.2.0.tgz#f87057e995b1a1f6ae6a4960664137bc56f039da"
   dependencies:
     ms "0.7.1"
 
-debug@^2.0.0, debug@^2.1.1, debug@^2.2.0:
-  version "2.6.6"
-  resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.6.tgz#a9fa6fbe9ca43cf1e79f73b75c0189cbb7d6db5a"
-  dependencies:
-    ms "0.7.3"
-
 decamelize@^1.0.0, decamelize@^1.1.1:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
@@ -1569,10 +1563,6 @@ ms@0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.1.tgz#9cd13c03adbff25b65effde7ce864ee952017098"
 
-ms@0.7.3:
-  version "0.7.3"
-  resolved "https://registry.yarnpkg.com/ms/-/ms-0.7.3.tgz#708155a5e44e33f5fd0fc53e81d0d40a91be1fff"
-
 mute-stream@0.0.5:
   version "0.0.5"
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.5.tgz#8fbfabb0a98a253d3184331f9e8deb7372fac6c0"