Bump the cargo group across 1 directory with 2 updates

Bumps the cargo group with 2 updates in the /src/nanvix_sandbox directory: [rand](https://github.com/rust-random/rand) and [rustls-webpki](https://github.com/rustls/webpki).


Updates `rand` from 0.8.5 to 0.8.6
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/0.8.6/CHANGELOG.md)
- [Commits](rust-random/rand@0.8.5...0.8.6)

Updates `rustls-webpki` from 0.103.10 to 0.103.13
- [Release notes](https://github.com/rustls/webpki/releases)
- [Commits](rustls/webpki@v/0.103.10...v/0.103.13)

---
updated-dependencies:
- dependency-name: rand
  dependency-version: 0.8.6
  dependency-type: indirect
  dependency-group: cargo
- dependency-name: rustls-webpki
  dependency-version: 0.103.13
  dependency-type: indirect
  dependency-group: cargo
...

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Author: dependabot[bot]