chore(package): update semantic-release to version 7.0.1

Author: greenkeeper[bot]

package.json

@@ -74,7 +74,7 @@
     "mocha": "^3.2.0",
     "nyc": "^11.0.2",
     "rimraf": "^2.6.1",
-    "semantic-release": "^6.3.6",
+    "semantic-release": "^7.0.1",
     "sinon": "^3.0.0",
     "source-map-support": "^0.4.11",
     "temp": "^0.8.3",