Sync yarn.lock with master

Author: kumar303

yarn.lock

@@ -5657,9 +5657,9 @@ postcss@^6.0.1:
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
-potools@^0.0.6:
-  version "0.0.6"
-  resolved "https://registry.yarnpkg.com/potools/-/potools-0.0.6.tgz#b21def182e9cb83a344deda3a342f2b9b5c2dbb1"
+potools@^0.0.7:
+  version "0.0.7"
+  resolved "https://registry.yarnpkg.com/potools/-/potools-0.0.7.tgz#621e3505848ecc53e68000ded2dde4b6e9fa555b"
   dependencies:
     chalk "^1.1.3"
     cli-progress "^1.4.1"