flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/567b938d64d4b4112ee253b9274472dc3a346eb6?narHash=sha256-%2Bebgonl3NbiKD2UD0x4BszCZQ6sTfL4xioaM49o5B3Y%3D' (2024-09-01)
  → 'github:hercules-ci/flake-parts/b905f6fc23a9051a6e1b741e1438dbfc0634c6de?narHash=sha256-%2Bhu54pAoLDEZT9pjHlqL9DNzWz0NbUn8NEAHP7PQPzU%3D' (2025-01-06)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/b833ff01a0d694b910daca6e2ff4a3f26dee478c?narHash=sha256-tLGCFEFTB5TaOKkpfw3iYT9dnk4awTP/q4w%2BROpMfuw%3D' (2024-09-01)
  → 'github:NixOS/nixpkgs/2f9e2f85cb14a46410a1399aa9ea7ecf433e422e?narHash=sha256-FWlPMUzp0lkQBdhKlPqtQdqmp%2B/C%2B1MBiEytaYfrCTY%3D' (2025-01-12)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/3ffd842a5f50f435d3e603312eefa4790db46af5?narHash=sha256-F4djBvyNRAXGusJiNYInqR6zIMI3rvlp6WiKwsRISos%3D' (2024-08-28)
  → 'github:numtide/treefmt-nix/13c913f5deb3a5c08bb810efd89dc8cb24dd968b?narHash=sha256-p2r8xhQZ3TYIEKBoiEhllKWQqWNJNoT9v64Vmg4q8Zw%3D' (2025-01-06)