chore: update semantic release

Author: buehler

package.json

@@ -37,7 +37,7 @@
  "del-cli": "^1.1.0",
  "jest": "^21.2.0",
  "mock-fs": "^4.4.1",
- "semantic-release": "^8.0.4",
+ "semantic-release": "^9.0.0",
  "ts-jest": "^21.0.0",
  "tslint": "^5.5.0",
  "tslint-config-airbnb": "^5.2.1",