chore(package): update semantic-release

Author: felixfbecker

package.json

@@ -78,7 +78,7 @@
     "nyc": "^11.0.2",
     "prettier": "1.12.1",
     "rimraf": "^2.6.1",
-    "semantic-release": "^10.0.1",
+    "semantic-release": "^15.1.8",
     "sinon": "^5.0.0",
     "source-map-support": "^0.5.0",
     "temp": "^0.8.3",
@@ -98,12 +98,6 @@
       "lib/test/**/*.js"
     ]
   },
-  "release": {
-    "verifyConditions": [
-      "@semantic-release/github",
-      "@semantic-release/npm"
-    ]
-  },
   "config": {
     "commitizen": {
       "path": "./node_modules/cz-conventional-changelog"