Bump newsroom-core from c1c932b to 90b8208 in /client

Bumps [newsroom-core](https://github.com/superdesk/newsroom-core) from `c1c932b` to `90b8208`.
- [Release notes](https://github.com/superdesk/newsroom-core/releases)
- [Commits](superdesk/newsroom-core@c1c932b...90b8208)

---
updated-dependencies:
- dependency-name: newsroom-core
  dependency-type: direct:production
...

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