build(deps): bump smoltcp-nal from 0.4.0 to 0.4.1

Bumps [smoltcp-nal](https://github.com/quartiq/smoltcp-nal) from 0.4.0 to 0.4.1.
- [Release notes](https://github.com/quartiq/smoltcp-nal/releases)
- [Changelog](https://github.com/quartiq/smoltcp-nal/blob/main/CHANGELOG.md)
- [Commits](quartiq/smoltcp-nal@0.4.0...0.4.1)

---
updated-dependencies:
- dependency-name: smoltcp-nal
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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