[Dependabot]: Bump neorv32 from 47aeb0a to 252f90c

Bumps [neorv32](https://github.com/stnolting/neorv32) from `47aeb0a` to `252f90c`.
- [Release notes](https://github.com/stnolting/neorv32/releases)
- [Commits](stnolting/neorv32@47aeb0a...252f90c)

---
updated-dependencies:
- dependency-name: neorv32
  dependency-version: 252f90cd60e6c42d4fc43dcd3ef39649374949dc
  dependency-type: direct:production
...

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

Author: dependabot[bot]