flake.lock: Update (#57)

Flake lock file updates:

• Updated input 'crane':
    'github:ipetkov/crane/2a5136f14a9ac93d9d370d64a36026c5de3ae8a4' (2023-12-20)
  → 'github:ipetkov/crane/afdcd41180e3dfe4dac46b5ee396e3b12ccc967a' (2023-12-24)
• Updated input 'fenix':
    'github:nix-community/fenix/7c6af11a6d9d4929fcaedd94eec9007795e52778' (2023-12-23)
  → 'github:nix-community/fenix/8ad4353759945bec3a5f4bfc53efe818bb41e12a' (2023-12-30)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/afbb8f31ff0fb66cb7f6ae89606727d01c0a8153' (2023-12-22)
  → 'github:rust-lang/rust-analyzer/e1e4626ff5f6831c375256bd8d0a153ee104390e' (2023-12-29)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d6863cbcbbb80e71cecfc03356db1cda38919523' (2023-12-21)
  → 'github:NixOS/nixpkgs/e1fa12d4f6c6fe19ccb59cac54b5b3f25e160870' (2023-12-25)

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