Bump superdesk-planning from d7abac0 to cb5853a in /client

Bumps [superdesk-planning](https://github.com/superdesk/superdesk-planning) from `d7abac0` to `cb5853a`.
- [Release notes](https://github.com/superdesk/superdesk-planning/releases)
- [Commits](superdesk/superdesk-planning@d7abac0...cb5853a)

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

Signed-off-by: dependabot[bot] <[email protected]>