Bump getkirby/cms from 3.5.5 to 3.5.8

Bumps [getkirby/cms](https://github.com/getkirby/kirby) from 3.5.5 to 3.5.8.
- [Release notes](https://github.com/getkirby/kirby/releases)
- [Commits](getkirby/kirby@3.5.5...3.5.8)

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

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