Bump superdesk-planning from c596b2e to 4441d33 in /client

Bumps [superdesk-planning](https://github.com/superdesk/superdesk-planning) from `c596b2e` to `4441d33`.
- [Release notes](https://github.com/superdesk/superdesk-planning/releases)
- [Commits](superdesk/superdesk-planning@c596b2e...4441d33)

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

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