[Dependabot]: Bump neorv32 from 40234cf to e90bfc9

Bumps [neorv32](https://github.com/stnolting/neorv32) from `40234cf` to `e90bfc9`.
- [Release notes](https://github.com/stnolting/neorv32/releases)
- [Commits](stnolting/neorv32@40234cf...e90bfc9)

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

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