fix(deps): update dependency pygithub to v2.6.1 (#602)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [PyGithub](https://redirect.github.com/pygithub/pygithub) | `==2.6.0`
-> `==2.6.1` |
[![age](https://developer.mend.io/api/mc/badges/age/pypi/pygithub/2.6.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/pypi/pygithub/2.6.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/pypi/pygithub/2.6.0/2.6.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/pypi/pygithub/2.6.0/2.6.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>pygithub/pygithub (PyGithub)</summary>

###
[`v2.6.1`](https://redirect.github.com/PyGithub/PyGithub/releases/tag/v2.6.1)

[Compare
Source](https://redirect.github.com/pygithub/pygithub/compare/v2.6.0...v2.6.1)

##### Bug Fixes

- Fix broken pickle support for `Auth` classes by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3211](https://redirect.github.com/PyGithub/PyGithub/pull/3211)
- Remove schema from `Deployment`, remove `message` attribute by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3223](https://redirect.github.com/PyGithub/PyGithub/pull/3223)
- Fix incorrect deprecated import by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3225](https://redirect.github.com/PyGithub/PyGithub/pull/3225)
- Add `CodeSecurityConfigRepository` returned by
`get_repos_for_code_security_config` by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3219](https://redirect.github.com/PyGithub/PyGithub/pull/3219)
- Make `GitTag.verification` return `GitCommitVerification` by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3226](https://redirect.github.com/PyGithub/PyGithub/pull/3226)

##### Maintenance

- Mention removal of `AppAuth.private_key` in changelog by
[@&#8203;EnricoMi](https://redirect.github.com/EnricoMi) in
[https://github.com/PyGithub/PyGithub/pull/3212](https://redirect.github.com/PyGithub/PyGithub/pull/3212)

**Full Changelog**:
PyGithub/PyGithub@v2.6.0...v2.6.1

</details>

---

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pyproject.toml

@@ -50,7 +50,7 @@ dependencies = [
   "pygit2>=1.16.0",
   "unidiff>=0.7.5",
   "datamodel-code-generator>=0.26.5",
-  "PyGithub==2.6.0",
+  "PyGithub==2.6.1",
   "GitPython==3.1.44",
   "psutil>=5.8.0",
   "fastapi[standard]<1.0.0,>=0.115.2",