python3-gitlab: update to 3.8.0.

[TheGejr]

Testing the changes

• I tested the changes in this PR: YES

Local build testing

• I built this PR locally for my native architecture, x86_64-glibc
• I built this PR locally for these architectures (if supported. mark crossbuilds):
  • [x] aarch64-musl (crossbuilds)
  • [x] aarch64 (crossbuilds)
  • [x] armv7l-musl (crossbuilds)
  • [x] armv7l (crossbuilds)
  • [x] i686 (crossbuilds)
  • [x] x86_64-musl (crossbuilds)

[classabbyamp]

3.8.1 is available

[github-actions[bot]]

Pull Requests become stale 90 days after last activity and are closed 14 days after that. If this pull request is still relevant bump it or assign it.