Bump superdesk-planning from e0cfeee to 90a2176 in /client (#660)

Bumps [superdesk-planning](https://github.com/superdesk/superdesk-planning) from `e0cfeee` to `90a2176`.
- [Release notes](https://github.com/superdesk/superdesk-planning/releases)
- [Commits](superdesk/superdesk-planning@e0cfeee...90a2176)

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

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