Build(deps-dev): Bump pygithub from 2.8.1 to 2.9.0

Bumps [pygithub](https://github.com/pygithub/pygithub) from 2.8.1 to 2.9.0.
- [Release notes](https://github.com/pygithub/pygithub/releases)
- [Changelog](https://github.com/PyGithub/PyGithub/blob/main/doc/changes.rst)
- [Commits](PyGithub/PyGithub@v2.8.1...v2.9.0)

---
updated-dependencies:
- dependency-name: pygithub
  dependency-version: 2.9.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -35,7 +35,7 @@ dynamic = ["version"]
 [project.optional-dependencies]
 tests = [
     "packaging==26.0",
-    "PyGithub==2.8.1",
+    "PyGithub==2.9.0",
     "appdirs==1.4.4",
     "requests==2.32.5",
     "PySide6==6.10.2",
@@ -55,7 +55,7 @@ doc = [
 freeze = [
     "pyinstaller==6.19.0",
     "packaging==26.0",
-    "PyGithub==2.8.1",
+    "PyGithub==2.9.0",
     "appdirs==1.4.4",
     "requests==2.32.5",
     "PySide6==6.10.2",