Bump superdesk-planning from 432b543 to afcb468 in /client (#159)

Bumps [superdesk-planning](https://github.com/superdesk/superdesk-planning) from `432b543` to `afcb468`.
- [Release notes](https://github.com/superdesk/superdesk-planning/releases)
- [Commits](superdesk/superdesk-planning@432b543...afcb468)

---
updated-dependencies:
- dependency-name: superdesk-planning
  dependency-type: direct:production
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>