node-lookup is being set up with build/test/pre-commit CI and a main-based
workflow, so its Gitea repo config needs to match.
- Change default_branch from master to main.
- Rename the branch protection rule to main and update the required status
checks to the new pipeline names (build, test, pre-commit) instead of the
old lint/unit-tests contexts.
unkinben
844fff8db6