chore(package): update run-sequence to version 1.2.1 (#1923)

https://greenkeeper.io/ [skip ci]

Author: greenkeeperio-bot

Diff for: package.json

@@ -80,7 +80,7 @@
     "mocha": "^2.5.1",
     "q": "^1.0.1",
     "recursive-readdir": "^2.0.0",
-    "run-sequence": "^1.2.0",
+    "run-sequence": "^1.2.1",
     "shelljs": "^0.7.0",
     "should": "^8.3.1",
     "yeoman-assert": "^2.0.0",