chore(deps): bump attrs from 25.4.0 to 26.1.0 in /tracker/backend (#5293)

Bumps [attrs](https://github.com/sponsors/hynek) from 25.4.0 to 26.1.0.
- [Commits](https://github.com/sponsors/hynek/commits)

---
updated-dependencies:
- dependency-name: attrs
  dependency-version: 26.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]