chore(package): update travis-deploy-once to version 5.0.9

Author: greenkeeper[bot]

package.json

@@ -61,7 +61,7 @@
     "semantic-release": "^15.0.0",
     "sinon": "^6.0.0",
     "sinon-stub-promise": "^4.0.0",
-    "travis-deploy-once": "^5.0.0",
+    "travis-deploy-once": "^5.0.9",
     "vue": "^2.5.13"
   },
   "scripts": {