⬆️ Bump libs/fiction from f2867d1 to 4f6cf7e (#252)

Bumps [libs/fiction](https://github.com/cda-tum/fiction) from `f2867d1` to `4f6cf7e`.
- [Release notes](https://github.com/cda-tum/fiction/releases)
- [Commits](cda-tum/fiction@f2867d1...4f6cf7e)

---
updated-dependencies:
- dependency-name: libs/fiction
  dependency-type: direct:production
...

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