This commit introduces a GitHub Actions workflow that automatically merges pull requests created by the fieldmate release process.
What it does:
- Detects PRs from branches starting with `fieldmate-auto-release`
- Attempts to enable auto-merge via GitHub CLI
- Falls back to direct squash merge if auto-merge is not possible
- Uses consistent commit messages and descriptions
This ensures that updates to fieldmate in frappe_docker are propagated cleanly and automatically, triggering rebuilds where needed.
