chore(deps): bump nixpkgs from 2c423e0 to 56c02bc (DIYgod#23125)

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `2c423e0` to `56c02bc`.
- [Commits](NixOS/nixpkgs@2c423e0...56c02bc)

---
updated-dependencies:
- dependency-name: nixpkgs
  dependency-version: 56c02bc00adcf003215cc4bd996d6efaf4cff188
  dependency-type: direct:production
...

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Author: dependabot[bot]