chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeperio-bot

yarn.lock

@@ -2102,11 +2102,9 @@ del@^2.0.2:
     pinkie-promise "^2.0.0"
     rimraf "^2.2.8"
 
-[email protected]:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/delay/-/delay-2.0.0.tgz#9112eadc03e4ec7e00297337896f273bbd91fae5"
-  dependencies:
-    p-defer "^1.0.0"
+[email protected]:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/delay/-/delay-3.0.0.tgz#97fc5c21028e20616e822ab11838c648808534eb"
 
 delayed-stream@~1.0.0:
   version "1.0.0"
@@ -4851,10 +4849,6 @@ osenv@^0.1.4:
     os-homedir "^1.0.0"
     os-tmpdir "^1.0.0"
 
-p-defer@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/p-defer/-/p-defer-1.0.0.tgz#9f6eb182f6c9aa8cd743004a7d4f96b196b0fb0c"
-
 p-finally@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"