version: 2
updates:
  # Maintain dependencies for GitHub Actions
  - package-ecosystem: "github-actions"
    directory: "/"
    schedule:
      # Check for updates to GitHub Actions every week
      interval: "weekly"

Add Dependabot configuration for GitHub Actions updates
Add Dependabot configuration for GitHub Actions updates

Add a Dependabot configuration that checks once a week if the GitHub Actions are still using the latest version. If not, it opens a PR to update them.

It will actually open very few PRs, since we only have major versions specified (like v3), so only on a major v4 release it will update and open a PR.

See https://docs.github.com/en/code-security/dependabot/working-with-dependabot/keeping-your-actions-up-to-date-with-dependabot