flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/81afc33397436c678482a1560bbc810cc3504dbc?narHash=sha256-NcfLaETnNMPHTlu7/oTrihCjTL6G2DIe6lHZ68o2n8w%3D' (2024-12-19)
  → 'github:nix-community/fenix/5edc630f5b1cae39beea96b392d0ec699e1e9d31?narHash=sha256-CCXoqOoXRJGsgRkyrCJOx%2Bm%2BukZ1i5dVRP/g8o4MbW8%3D' (2025-01-20)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/27fac08c82210837a2ac84fa5e39eee6993f1605?narHash=sha256-IGe/elaXn5XXA62RIL9OuLMq1vgrUCm%2BbYPqYCZJ7Ug%3D' (2024-12-18)
  → 'github:rust-lang/rust-analyzer/248bd511aee2c1c1cb2d5314649521d6d93b854a?narHash=sha256-W8xioeq%2Bh9dzGvtXPlQAn2nXtgNDN6C8uA1/9F2JP5I%3D' (2025-01-18)
• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/205b12d8b7cd4802fbcb8e8ef6a0f1408781a4f9?narHash=sha256-4pDvzqnegAfRkPwO3wmwBhVi/Sye1mzps0zHWYnP88c%3D' (2024-12-04)
  → 'github:hercules-ci/flake-parts/b905f6fc23a9051a6e1b741e1438dbfc0634c6de?narHash=sha256-%2Bhu54pAoLDEZT9pjHlqL9DNzWz0NbUn8NEAHP7PQPzU%3D' (2025-01-06)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d3c42f187194c26d9f0309a8ecc469d6c878ce33?narHash=sha256-cHar1vqHOOyC7f1%2BtVycPoWTfKIaqkoe1Q6TnKzuti4%3D' (2024-12-17)
  → 'github:NixOS/nixpkgs/5df43628fdf08d642be8ba5b3625a6c70731c19c?narHash=sha256-Tbk1MZbtV2s5aG%2BiM99U8FqwxU/YNArMcWAv6clcsBc%3D' (2025-01-16)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/573c674a3ad06e8a525263185ebef336a411d1d5?narHash=sha256-BxQ/4JuHEi0zRjF0P8B5xnbXOLulgsK2gfwVRXGZ4a4%3D' (2024-12-19)
  → 'github:oxalica/rust-overlay/275c824ed9e90e7fd4f96d187bde3670062e721f?narHash=sha256-5UciRckNV%2BYOZ6y6ASBIb01cySB12whDxgFUK%2BEqT8g%3D' (2025-01-20)