chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

yarn.lock

@@ -2361,11 +2361,11 @@ osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
-p-event@^1.3.0:
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/p-event/-/p-event-1.3.0.tgz#8e6b4f4f65c72bc5b6fe28b75eda874f96a4a085"
+p-event@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/p-event/-/p-event-2.0.0.tgz#0efccf409c3b3a9ef5cd078ca39de7d446b43799"
   dependencies:
-    p-timeout "^1.1.1"
+    p-timeout "^2.0.1"
 
 p-finally@^1.0.0:
   version "1.0.0"
@@ -2383,9 +2383,9 @@ p-locate@^2.0.0:
   dependencies:
     p-limit "^1.1.0"
 
-p-timeout@^1.1.1:
-  version "1.2.1"
-  resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-1.2.1.tgz#5eb3b353b7fce99f101a1038880bb054ebbea386"
+p-timeout@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-2.0.1.tgz#d8dd1979595d2dc0139e1fe46b8b646cb3cdf038"
   dependencies:
     p-finally "^1.0.0"