chore(deps): update dependency semantic-release to v15.13.12 (#9)

chore(deps): update dependency semantic-release to v15.13.12

Author: mike-north

package.json

@@ -15,7 +15,7 @@
   },
   "devDependencies": {
     "@types/execa": "0.9.0",
-    "semantic-release": "15.12.4",
+    "semantic-release": "15.13.12",
     "travis-deploy-once": "5.0.9"
   },
   "engines": {