Update offline-github-changelog to version 2.4.0

Author: depfu[bot]

package.json

@@ -67,7 +67,7 @@
     "magicpen-prism": "^5.0.0",
     "mocha": "^8.2.1",
     "nyc": "^15.0.0",
-    "offline-github-changelog": "^1.7.0",
+    "offline-github-changelog": "^2.4.0",
     "prettier": "~2.4.1",
     "puppeteer": "^10.0.0",
     "semver": "^7.0.0",