flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/9126214d0a59633752a136528f5f3b9aa8565b7d?narHash=sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm%2BGpZNw%3D' (2024-04-01)
  → 'github:hercules-ci/flake-parts/e5d10a24b66c3ea8f150e47dfdb0416ab7c3390e?narHash=sha256-yzcRNDoyVP7%2BSCNX0wmuDju1NUCt8Dz9%2BlyUXEI0dbI%3D' (2024-05-02)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:NixOS/nixpkgs/d8fe5e6c92d0d190646fb9f1056741a229980089?dir=lib&narHash=sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk%3D' (2024-03-29)
  → 'https://github.com/NixOS/nixpkgs/archive/50eb7ecf4cd0a5756d7275c8ba36790e5bd53e33.tar.gz?narHash=sha256-QBx10%2Bk6JWz6u7VsohfSw8g8hjdBZEf8CFzXH1/1Z94%3D' (2024-05-02)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/fd16bb6d3bcca96039b11aa52038fafeb6e4f4be?narHash=sha256-LJbHQQ5aX1LVth2ST%2BKkse/DRzgxlVhTL1rxthvyhZc%3D' (2024-04-20)
  → 'github:nixos/nixpkgs/e4e7a43a9db7e22613accfeb1005cca1b2b1ee0d?narHash=sha256-FCi3R1MeS5bVp0M0xTheveP6hhcCYfW/aghSTPebYL4%3D' (2024-05-11)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/67e961704b80454f1ba6595b02e26afc9af4cdce?narHash=sha256-j/lrqFNzm7SdlBlKX43kA2Wp0OaGVOUjQGnER9//4Ao%3D' (2024-04-20)
  → 'github:oxalica/rust-overlay/8eb8671512cb0c72c748058506e50c54fb5d8e2b?narHash=sha256-nSUFcUqyTQQ/aYFIB05mpCzytcKvfKMy3ZQAe0fP26A%3D' (2024-05-11)