Bump newsroom-core from 9b69d36 to 4e7f2e0 in /client

Bumps [newsroom-core](https://github.com/superdesk/newsroom-core) from `9b69d36` to `4e7f2e0`.
- [Release notes](https://github.com/superdesk/newsroom-core/releases)
- [Commits](superdesk/newsroom-core@9b69d36...4e7f2e0)

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

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