[Dependabot]: Bump neorv32 from 7952e75 to d6d31fc

Bumps [neorv32](https://github.com/stnolting/neorv32) from `7952e75` to `d6d31fc`.
- [Release notes](https://github.com/stnolting/neorv32/releases)
- [Commits](stnolting/neorv32@7952e75...d6d31fc)

---
updated-dependencies:
- dependency-name: neorv32
  dependency-type: direct:production
...

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