feat: migrate from hub to gh CLI for pull request management

[github-actions]

📝 Brief description

feat: migrate from hub to gh CLI for pull request management
feat: migrate from hub to gh CLI for pull request management

💻 Commits

• fbcf91f - ChristophShyper - 2026-06-04 10:37:10
  | feat: migrate from hub to gh CLI for pull request management
  |
• 4220a95 - ChristophShyper - 2026-06-04 10:29:47
  feat: migrate from hub to gh CLI for pull request management

📁 Modified files

Dockerfile | 18 ---
entrypoint.sh | 81 ++++++----
tests/docker/local-image.yml | 2 +-
tests/unit/test_pr_create_with_gh.sh (new +x) | 210 ++++++++++++++++++++++++++
tests/unit/test_template_source_selection.sh | 34 ++---
5 files changed, 276 insertions(+), 69 deletions(-)

⚠️ Additional information

• Pushed to a branch with a proper name and provided proper commit message.
• Provided a clear and concise description of what the issue is.

Check CONTRIBUTING.md and CODE_OF_CONDUCT.md for more information