Bump newsroom-core from 4147c07 to e9c4a1a in /client

Bumps [newsroom-core](https://github.com/superdesk/newsroom-core) from `4147c07` to `e9c4a1a`.
- [Release notes](https://github.com/superdesk/newsroom-core/releases)
- [Commits](superdesk/newsroom-core@4147c07...e9c4a1a)

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

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