chore(package): update @semantic-release/github to version 7.0.3

Closes #14

Author: greenkeeper[bot]

package.json

@@ -29,7 +29,7 @@
     "@commitlint/config-conventional": "^6.1.3",
     "@semantic-release/changelog": "^2.0.1",
     "@semantic-release/git": "^4.0.1",
-    "@semantic-release/github": "^4.0.0",
+    "@semantic-release/github": "^7.0.3",
     "@semantic-release/npm": "^3.0.0",
     "commitizen": "^2.9.6",
     "cz-conventional-changelog": "^2.1.0",