chore(package): update @types/helmet to version 0.0.44

Closes #66

Author: greenkeeper[bot]

package.json

@@ -81,7 +81,7 @@
     "@types/download": "6.2.3",
     "@types/express": "4.16.0",
     "@types/fs-extra": "5.0.4",
-    "@types/helmet": "0.0.42",
+    "@types/helmet": "0.0.44",
     "@types/js-yaml": "3.11.2",
     "@types/mocha": "5.2.5",
     "@types/node": "10.12.12",