flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/4022d587cbbfd70fe950c1e2083a02621806a725' (2023-12-04)
  → 'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26' (2024-01-15)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/a9bf124c46ef298113270b1f84a164865987a91c' (2023-12-11)
  → 'github:nixos/nixpkgs/612f97239e2cc474c13c9dafa0df378058c5ad8d' (2024-01-21)
• Updated input 'spectrum':
    'git+https://spectrum-os.org/git/spectrum?ref=refs/heads/main&rev=97e2f3429ee61dc37664b4d096b2fec48a57b691' (2023-12-22)
  → 'git+https://spectrum-os.org/git/spectrum?ref=refs/heads/main&rev=3d4bf3dd797a55e659012372709e6e2a56948181' (2024-01-19)

Author: astro