flake.lock: Update (#1912)

Automated changes by the
[update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock)
GitHub Action.

```
Flake lock file updates:

• Updated input 'git-hooks-nix':
    'github:cachix/git-hooks.nix/50b9238891e388c9fdc6a5c49e49c42533a1b5ce?narHash=sha256-QlcnByMc8KBjpU37rbq5iP7Cp97HvjRP0ucfdh%2BM4Qc%3D' (2025-11-24)
  → 'github:cachix/git-hooks.nix/548fc44fca28a5e81c5d6b846e555e6b9c2a5a3c?narHash=sha256-rhSqPNxDVow7OQKi4qS5H8Au0P4S3AYbawBSmJNUtBQ%3D' (2025-12-06)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/c507e053a25734117e9a79cc8d34b0626110f480?narHash=sha256-IpMFPpC5VJmgIiuehH0x9G5pIn2E0l/pP7QD40vkPE8%3D' (2025-11-29)
  → 'github:NixOS/nixpkgs/8d4d79a68cec95fa317751744dfaa2d1bdfc6cf1?narHash=sha256-GlzJL295FCmOCG2M4fFR8/lp6ElR8Pje1DSXsFjMtaQ%3D' (2025-12-06)
• Updated input 'released-nix-unstable':
    'github:nixos/nix/01dbbc926ff9d87202b5e16e5af7471b39ddfc37?narHash=sha256-TFqz6vLOmgzoKAk5uFnmRvC07NWUE6s5dj4HFU/zCEI%3D' (2025-11-29)
  → 'github:nixos/nix/42d7d9676d435a85ab14abaae1339f25750674c2?narHash=sha256-Zcm%2BlPQWnuYJ2QfeEeONi6NjE3vPUCi8aGhMLiWpXJo%3D' (2025-12-06)
• Updated input 'released-nix-unstable/nixpkgs':
    'github:NixOS/nixpkgs/daf6dc47aa4b44791372d6139ab7b25269184d55?narHash=sha256-wxX7u6D2rpkJLWkZ2E932SIvDJW8%2BON/0Yy8%2Ba5vsDU%3D' (2025-10-27)
  → 'https://releases.nixos.org/nixos/25.05/nixos-25.05.813095.1c8ba8d3f763/nixexprs.tar.xz?narHash=sha256-zZk7fn2ARAqmLwaYTpxBJmj81KIdz11NiWt7ydHHD/M%3D' (2025-11-24)
• Updated input 'released-nixpkgs-stable':
    'github:NixOS/nixpkgs/d542db745310b6929708d9abea513f3ff19b1341?narHash=sha256-x2xCEXUlU4Ap56%2Bt5HaoReOQ/bV/bIQ5rzTn/m%2BV3HQ%3D' (2025-11-30)
  → 'github:NixOS/nixpkgs/c97c47f2bac4fa59e2cbdeba289686ae615f8ed4?narHash=sha256-OtzF5wBvO0jgW1WW1rQU9cMGx7zuvkF7CAVJ1ypzkxA%3D' (2025-12-04)
• Updated input 'released-nixpkgs-unstable':
    'github:NixOS/nixpkgs/2fad6eac6077f03fe109c4d4eb171cf96791faa4?narHash=sha256-sKoIWfnijJ0%2B9e4wRvIgm/HgE27bzwQxcEmo2J/gNpI%3D' (2025-11-27)
  → 'github:NixOS/nixpkgs/f61125a668a320878494449750330ca58b78c557?narHash=sha256-BmPWzogsG2GsXZtlT%2BMTcAWeDK5hkbGRZTeZNW42fwA%3D' (2025-12-05)
```

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