build(deps): bump fenix from 3c09e6c to b7bd932

Bumps [fenix](https://github.com/nix-community/fenix) from `3c09e6c` to `b7bd932`.
- [Commits](nix-community/fenix@3c09e6c...b7bd932)

---
updated-dependencies:
- dependency-name: fenix
  dependency-version: b7bd9323fe26a3b4f4bddbb2c2a1dacabced2f88
  dependency-type: direct:production
...

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Author: dependabot[bot]