Bump superdesk-core from 3c8a335 to 2c1f3ac in /client (#127)

Bumps [superdesk-core](https://github.com/superdesk/superdesk-client-core) from `3c8a335` to `2c1f3ac`.
- [Release notes](https://github.com/superdesk/superdesk-client-core/releases)
- [Commits](superdesk/superdesk-client-core@3c8a335...2c1f3ac)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>