Release v2.13.9

[hunner]

Pull Request Description

What and why?

I forgot these in v2.13.8:

• fix: WeakspotsDiagnosis crash on custom metrics subset #541
• fix: CalibrationCurve non-{0,1} binary crash and Weakspots custom-metric override #542
• fix: refresh OIDC access token on request path #548

Release notes

None. release pr

Checklist

• What and why
• Screenshots or videos (Frontend)
• How to test
• What needs special review
• Dependencies, breaking changes, and deployment notes
• Labels applied
• PR linked to Shortcut
• Unit tests added (Backend)
• Tested locally
• Documentation updated (if required)
• Environment variable additions/changes documented (if required)

[github-actions]

PR Summary

This pull request updates the project metadata to reflect a new release. The changes ensure that all version references in the project files are consistent. No functional changes have been introduced, and these modifications are aimed solely at keeping the release information up to date.

Test Suggestions

• Verify that the version attribute in the code reports the correct version.
• Run the full test suite to ensure that the version update does not introduce any unforeseen issues.
• Check package distribution files to confirm the updated version is reflected there.