chore(package): update semantic-release to version 8.0.3

Closes #10

Author: greenkeeper[bot]

package.json

@@ -39,7 +39,7 @@
     "lint-staged": "^4.2.1",
     "mocha": "^3.4.2",
     "prettier-standard": "^6.0.0",
-    "semantic-release": "^7.0.1",
+    "semantic-release": "^8.0.3",
     "standard": "^10.0.2"
   },
   "lint-staged": {