chore(package): update @semantic-release/github to version 5.2.8

Closes #114

Author: greenkeeper[bot]

package.json

@@ -44,7 +44,7 @@
   "devDependencies": {
     "@semantic-release/changelog": "3.0.0",
     "@semantic-release/git": "7.0.4",
-    "@semantic-release/github": "5.0.2",
+    "@semantic-release/github": "5.2.8",
     "@semantic-release/npm": "5.0.4",
     "@vue/cli-plugin-babel": "3.0.3",
     "@vue/cli-plugin-eslint": "3.0.0-beta.15",