chore(deps): update dependency gh-pages to v3

Author: renovate-bot

package-lock.json

@@ -46,7 +46,7 @@
     "@babel/preset-env": "^7.4.5",
     "eslint": "^7.0.0",
     "eslint-plugin-import": "^2.17.3",
-    "gh-pages": "^2.0.1",
+    "gh-pages": "^3.0.0",
     "husky": "^4.0.0",
     "lint-staged": "^10.0.0",
     "node-sass": "^4.13.0",