Bump getkirby/cms from 4.3.0 to 4.3.1

Bumps [getkirby/cms](https://github.com/getkirby/kirby) from 4.3.0 to 4.3.1.
- [Release notes](https://github.com/getkirby/kirby/releases)
- [Commits](getkirby/kirby@4.3.0...4.3.1)

---
updated-dependencies:
- dependency-name: getkirby/cms
  dependency-type: direct:production
...

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