Bump impresscms from 8598ded to 4c56a22 (#52)

Bumps [impresscms](https://github.com/ImpressCMS/impresscms) from `8598ded` to `4c56a22`.
- [Release notes](https://github.com/ImpressCMS/impresscms/releases)
- [Commits](ImpressCMS/impresscms@8598ded...4c56a22)

---
updated-dependencies:
- dependency-name: impresscms
  dependency-type: direct:production
...

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