Bump pygithub from 2.1.1 to 2.3.0

Bumps [pygithub](https://github.com/pygithub/pygithub) from 2.1.1 to 2.3.0.
- [Release notes](https://github.com/pygithub/pygithub/releases)
- [Changelog](https://github.com/PyGithub/PyGithub/blob/main/doc/changes.rst)
- [Commits](PyGithub/PyGithub@v2.1.1...v2.3.0)

---
updated-dependencies:
- dependency-name: pygithub
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -6,6 +6,6 @@ python-gitlab==4.3.0
 rdflib==7.0.0
 requests==2.31.0
 SPARQLTransformer==2.3.0
-PyGithub==2.1.1
+PyGithub==2.3.0
 gunicorn==21.2.0; sys_platform!="win32"
 waitress>=1.4.2; sys_platform=="win32"