allow harden-runner to connect to any github subdomains

[srabraham]

https://github.com/burningmantech/ranger-ims-server/pull/1410#issuecomment-2476297519

[github-actions[bot]]

⚠️ Optional matrix job Py:3.14.0-alpha.1 - ubuntu-latest failed ⚠️

• tox prefix: test
• exit status: 1