fix(deps): update dependency python-gitlab to v7

This MR contains the following updates:

Package	Change	Age	Confidence
python-gitlab (changelog)	==6.5.0 → ==7.1.0

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Release Notes

python-gitlab/python-gitlab (python-gitlab)

v7.1.0

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Bug Fixes

• utils: Prevent negative sleep time in rate limit retry (4221195)

Continuous Integration

• release: Use the correct token for publish to GitHub (614a74c)

Features

• registry-protection: Add support for registry protection rule deletion (9dd62c3)

Testing

• functional: Update to GitLab 18.6 and resolve issues found (c7c139b)

v7.0.0

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Features

• Drop Python 3.9 support and add Python 3.14 (22941ac)

Breaking Changes

• As of python-gitlab 7.0.0, Python 3.9 is no longer supported. Python 3.10 or higher is required.

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