Bump superdesk-core from c9ae32d to e74c71d in /client

Bumps [superdesk-core](https://github.com/superdesk/superdesk-client-core) from `c9ae32d` to `e74c71d`.
- [Release notes](https://github.com/superdesk/superdesk-client-core/releases)
- [Commits](superdesk/superdesk-client-core@c9ae32d...e74c71d)

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

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