flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/fd281bd6b7d3e32ddfa399853946f782553163b5' (2024-04-03)
  → 'github:nixos/nixpkgs/7bb2ccd8cdc44c91edba16c48d2c8f331fb3d856' (2024-04-25)
• Updated input 'poetry2nixFlake':
    'github:nix-community/poetry2nix/3c92540611f42d3fb2d0d084a6c694cd6544b609' (2024-02-22)
  → 'github:nix-community/poetry2nix/9245811b58905453033f1ef551f516cbee71c42c' (2024-04-26)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/e35aed5fda3cc79f88ed7f1795021e559582093a' (2024-04-02)
  → 'github:cachix/pre-commit-hooks.nix/6fb82e44254d6a0ece014ec423cb62d92435336f' (2024-04-24)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/41b3b080cc3e4b3a48e933b87fc15a05f1870779' (2024-04-06)
  → 'github:oxalica/rust-overlay/2a42c742ab04b61d9b2f1edf392842cf9f27ebfd' (2024-04-26)