flake.lock: Update

Flake lock file updates:

• Updated input 'gitignore':
    'github:hercules-ci/gitignore.nix/637db329424fd7e46cf4185293b9cc8c88c95394?narHash=sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs%3D' (2024-02-28)
  → 'github:hercules-ci/gitignore.nix/cb5e3fdca1de58ccbc3ef53de65bd372b48f567c?narHash=sha256-XmjITeZNMTQXGhhww6ed/Wacy2KzD6svioyCX7pkUu4%3D' (2025-11-10)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/9cb344e96d5b6918e94e1bca2d9f3ea1e9615545?narHash=sha256-gKlP0LbyJ3qX0KObfIWcp5nbuHSb5EHwIvU6UcNBg2A%3D' (2025-08-20)
  → 'github:NixOS/nixpkgs/6c8f0cca84510cc79e09ea99a299c9bc17d03cb6?narHash=sha256-M5aFEFPppI4UhdOxwdmceJ9bDJC4T6C6CzCK1E2FZyo%3D' (2025-12-01)
• Updated input 'zig-overlay':
    'github:mitchellh/zig-overlay/5cd601f8760d2383210b7b8c8a45fc79388f3ddf?narHash=sha256-hgnov6RLA%2BDD4Uocs/vCbiH3/3sKvqiJOKHpdhGyVAI%3D' (2025-08-22)
  → 'github:mitchellh/zig-overlay/8f7347545dea59b75e40247cc1ed55a42f64dbbf?narHash=sha256-ivb0SqCptyIxx5g8ryRrUL0xrJhLrJPlvZbZjxVaui0%3D' (2025-11-27)

Author: Techatrix