flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/d465f4819400de7c8d874d50b982301f28a84605' (2024-02-28)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/85f1ba3e51676fa8cc604a3d863d729026a6b8eb' (2023-11-04)
  → 'github:NixOS/nixpkgs/1536926ef5621b09bba54035ae2bb6d806d72ac8' (2024-02-29)
• Updated input 'poetry2nix':
    'github:nix-community/poetry2nix/bf0601d5d9ae7334fa80f5f7c9648009390046ca' (2023-11-07)
  → 'github:nix-community/poetry2nix/3c92540611f42d3fb2d0d084a6c694cd6544b609' (2024-02-22)
• Updated input 'poetry2nix/flake-utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26' (2024-01-15)
• Updated input 'poetry2nix/nix-github-actions':
    'github:nix-community/nix-github-actions/4bb5e752616262457bc7ca5882192a564c0472d2' (2023-11-03)
  → 'github:nix-community/nix-github-actions/5163432afc817cf8bd1f031418d1869e4c9d5547' (2023-12-29)
• Updated input 'poetry2nix/treefmt-nix':
    'github:numtide/treefmt-nix/5deb8dc125a9f83b65ca86cf0c8167c46593e0b1' (2023-10-27)
  → 'github:numtide/treefmt-nix/e504621290a1fd896631ddbc5e9c16f4366c9f65' (2024-02-19)