⬆️ Bump setuptools from 67.4.0 to 75.5.0 in /tvheadend

Bumps [setuptools](https://github.com/pypa/setuptools) from 67.4.0 to 75.5.0.
- [Release notes](https://github.com/pypa/setuptools/releases)
- [Changelog](https://github.com/pypa/setuptools/blob/main/NEWS.rst)
- [Commits](pypa/setuptools@v67.4.0...v75.5.0)

---
updated-dependencies:
- dependency-name: setuptools
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

tvheadend/requirements.txt

@@ -1,2 +1,2 @@
-setuptools==67.4.0
+setuptools==75.5.0
 streamlink==5.3.1