flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/0e74ca98a74bc7270d28838369593635a5db3260' (2024-02-21)
  → 'github:nixos/nixpkgs/73de017ef2d18a04ac4bfd0c02650007ccb31c2a' (2024-02-24)
• Updated input 'spectrum':
    'git+https://spectrum-os.org/git/spectrum?ref=refs/heads/main&rev=6d0e73864d28794cdbd26ab7b37259ab0e1e044c' (2024-02-19)
  → 'git+https://spectrum-os.org/git/spectrum?ref=refs/heads/main&rev=044a7b47d3bef12124e82c38d1e6aece47302a78' (2024-02-26)

Author: astro