Update python-gitlab requirement from ~=4.6.0 to ~=4.7.0

Updates the requirements on [python-gitlab](https://github.com/python-gitlab/python-gitlab) to permit the latest version.
- [Release notes](https://github.com/python-gitlab/python-gitlab/releases)
- [Changelog](https://github.com/python-gitlab/python-gitlab/blob/main/CHANGELOG.md)
- [Commits](python-gitlab/python-gitlab@v4.6.0...v4.7.0)

---
updated-dependencies:
- dependency-name: python-gitlab
  dependency-type: direct:production
...

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

requirements.txt

@@ -8,5 +8,5 @@ setuptools~=70.1.0
 pexpect~=4.9.0
 GitPython~=3.1.43
 PyGithub~=2.3.0
-python-gitlab~=4.6.0
+python-gitlab~=4.7.0
 cryptography~=42.0.8