Bump superdesk-planning from ee37c70 to 5aff1bf in /client

Bumps [superdesk-planning](https://github.com/superdesk/superdesk-planning) from `ee37c70` to `5aff1bf`.
- [Release notes](https://github.com/superdesk/superdesk-planning/releases)
- [Commits](superdesk/superdesk-planning@ee37c70...5aff1bf)

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

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