bookmarkmgr: bump attrs from 24.3.0 to 25.1.0 in /bookmarkmgr

Bumps [attrs](https://github.com/sponsors/hynek) from 24.3.0 to 25.1.0.
- [Commits](https://github.com/sponsors/hynek/commits)

---
updated-dependencies:
- dependency-name: attrs
  dependency-type: indirect
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]