build(nix): update dependencies

• Updated input 'fenix':
    'github:nix-community/fenix/7f1477d3cabc49c7f39faa89683fadb5f31d5e9f?narHash=sha256-/Fx2DHb11MA%2BnGwaoy3drrVTfALqvUm2pkHU8GNO%2B/Q%3D' (2024-12-29)
  → 'github:nix-community/fenix/a9d84a1545814910cb4ab0515ed6921e8b07ee95?narHash=sha256-lFadwWDvVIub11bwfZhsh2WUByf9LOi6yjsSUMmE0xk%3D' (2025-01-02)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/dc6cea57a247bc5166b25609ec9d37c990f1417b?narHash=sha256-t1ZcoajdRbFqcae8nFQtdz9FC9g84nIdS/YIA0tkIYI%3D' (2024-12-28)
  → 'github:rust-lang/rust-analyzer/7e639ee3dda6ed9cecc79d41f6d38235121e483d?narHash=sha256-q3a80h8Jf8wfmPURUgRR46nQCB3I5fhZ%2B/swulTF5HY%3D' (2025-01-01)
• Updated input 'nixpkgs-darwin':
    'github:nixos/nixpkgs/9f94733f93e4fe6e82f516efae007096e4ab5a21?narHash=sha256-Qoz0ow6jDGUIBHxduc7Y1cjYFS71tvEGJV5Src/mj98%3D' (2024-12-28)
  → 'github:nixos/nixpkgs/464fe85c27bd5761781a2773526ef9c1b0184dda?narHash=sha256-6jNmY7BaooArDpOhT8QbGxR0x8as43AJUoHfm1rJY1M%3D' (2024-12-30)
• Updated input 'nixpkgs-nixos':
    'github:nixos/nixpkgs/d49da4c08359e3c39c4e27c74ac7ac9b70085966?narHash=sha256-MgdXpeX2GuJbtlBrH9EdsUeWl/yXEubyvxM1G%2ByO4Ak%3D' (2024-12-27)
  → 'github:nixos/nixpkgs/edf04b75c13c2ac0e54df5ec5c543e300f76f1c9?narHash=sha256-tfYRbFhMOnYaM4ippqqid3BaLOXoFNdImrfBfCp4zn0%3D' (2024-12-31)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/915d7c42a706f9191696d1b779cf1ea1769d34a8?narHash=sha256-IysonaW/cItfmMuvg43flOqMgS4N0C6yKJobCa09XOQ%3D' (2024-12-29)
  → 'github:oxalica/rust-overlay/04d5f1836721461b256ec452883362c5edc5288e?narHash=sha256-tIl5p3ueaPw7T5T1UXkLc8ISMk6Y8CI/D/rd0msf73I%3D' (2025-01-02)

Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>