flake.lock: Update (#95)

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/d99d2a562b9c9d5f0e4399e5bb677b37a791c7eb' (2025-02-03)
  → 'github:nix-community/fenix/d7616af878cd0cb7f940b470440347920395be0c' (2025-02-10)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/f3998f7f8a197596c5edf72e937996e6674b423b' (2025-02-02)
  → 'github:rust-lang/rust-analyzer/35181e167efb94d5090df588e6af9f93250421f3' (2025-02-09)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/3a228057f5b619feb3186e986dbe76278d707b6e' (2025-02-01)
  → 'github:nixos/nixpkgs/a79cfe0ebd24952b580b1cf08cd906354996d547' (2025-02-08)
• Updated input 'poetry2nix':
    'github:nix-community/poetry2nix/75d0515332b7ca269f6d7abfd2c44c47a7cbca7b' (2025-01-14)
  → 'github:nix-community/poetry2nix/be1fe795035d3d36359ca9135b26dcc5321b31fb' (2025-02-05)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>