Update flake.lock

[GaetanLepage]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/91050ea1e57e50388fa87a3302ba12d188ef723a' (2023-12-01)
  → 'github:NixOS/nixpkgs/2c7f3c0fb7c08a0814627611d9d7d45ab6d75335' (2023-12-04)

Running GitHub Actions on this PR

GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action.

To run GitHub Actions workflows on this PR, run:

git branch -D update_flake_lock_action
git fetch origin
git checkout update_flake_lock_action
git commit --amend --no-edit
git push origin update_flake_lock_action --force