chore(deps): update cortex-m-semihosting requirement from 0.3.5 to 0.5.0 (#4)

Updates the requirements on [cortex-m-semihosting](https://github.com/rust-embedded/cortex-m) to permit the latest version.
- [Release notes](https://github.com/rust-embedded/cortex-m/releases)
- [Changelog](https://github.com/rust-embedded/cortex-m/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-embedded/cortex-m/compare/c-m-sh-v0.3.5...v0.5.0

)

---
updated-dependencies:
- dependency-name: cortex-m-semihosting
  dependency-type: direct:production
...

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