Description of the problem, including code/CLI snippet

Allow setting the allow_force_push boolean attribute when creating protected branches.

Attribute is documented here:
https://docs.gitlab.com/ee/api/protected_branches.html#protect-repository-branches

And is missing from here:
https://github.com/python-gitlab/python-gitlab/blob/main/gitlab/v4/objects/branches.py#L35

Expected Behavior

Actual Behavior

Specifications

• python-gitlab version: 3.13.0
• API version you are using (v3/v4): v4
• Gitlab server version (or gitlab.com): gitlab.com