mgr/dashboard: bump table in /src/pybind/mgr/dashboard/frontend

Bumps [table](https://github.com/gajus/table) from 6.8.0 to 6.9.0.
- [Release notes](https://github.com/gajus/table/releases)
- [Commits](gajus/table@v6.8.0...v6.9.0)

---
updated-dependencies:
- dependency-name: table
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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