chore(nix): bump rust-overlay from 83a17eb to 0173518 (#66)

Bumps [rust-overlay](https://github.com/oxalica/rust-overlay) from `83a17eb` to `0173518`.
- [Commits](oxalica/rust-overlay@83a17eb...0173518)

---
updated-dependencies:
- dependency-name: rust-overlay
  dependency-version: '017351829a9356423afd2cca0dde9b63346c8ab3'
  dependency-type: direct:production
...

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