Build(deps): Bump pygithub from 2.7.0 to 2.8.1

Bumps [pygithub](https://github.com/pygithub/pygithub) from 2.7.0 to 2.8.1.
- [Release notes](https://github.com/pygithub/pygithub/releases)
- [Changelog](https://github.com/PyGithub/PyGithub/blob/main/doc/changes.rst)
- [Commits](PyGithub/PyGithub@v2.7.0...v2.8.1)

---
updated-dependencies:
- dependency-name: pygithub
  dependency-version: 2.8.1
  dependency-type: direct:production
  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==25.0",
-    "PyGithub==2.7.0",
+    "PyGithub==2.8.1",
     "appdirs==1.4.4",
     "requests==2.32.5",
     "PySide6==6.9.1",
@@ -55,7 +55,7 @@ doc = [
 freeze = [
     "pyinstaller==6.15.0",
     "packaging==25.0",
-    "PyGithub==2.7.0",
+    "PyGithub==2.8.1",
     "appdirs==1.4.4",
     "requests==2.32.5",
     "PySide6==6.9.1",