chore(nix): bump nixpkgs from 26ef669 to 0c88e1f (#36)

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `26ef669` to `0c88e1f`.
- [Commits](NixOS/nixpkgs@26ef669...0c88e1f)

---
updated-dependencies:
- dependency-name: nixpkgs
  dependency-version: 0c88e1f2bdb93d5999019e99cb0e61e1fe2af4c5
  dependency-type: direct:production
...

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