chore(package): update semantic-release to version 15.10.6

Author: greenkeeper[bot]

package.json

@@ -32,7 +32,7 @@
     "istanbul": "^0.4.5",
     "mocha": "^5.2.0",
     "pre-git": "^3.15.3",
-    "semantic-release": "^15.9.5"
+    "semantic-release": "^15.10.6"
   },
   "config": {
     "pre-git": {