build(deps): bump nixpkgs from a5cbcfe to c27cdad

Bumps [nixpkgs](https://github.com/NixOS/nixpkgs) from `a5cbcfe` to `c27cdad`.
- [Commits](NixOS/nixpkgs@a5cbcfe...c27cdad)

---
updated-dependencies:
- dependency-name: nixpkgs
  dependency-version: c27cdad491a991b11ed731760aa2ef8db0cb0410
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]