flake.lock: Update

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/4022d587cbbfd70fe950c1e2083a02621806a725' (2023-12-04)
• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/e92039b55bcd58469325ded85d4f58dd5a4eaf58' (2023-11-29)
  → 'github:nixos/nixpkgs/2c7f3c0fb7c08a0814627611d9d7d45ab6d75335' (2023-12-04)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/516c9477757b628b157780d96d84e8c82b46dc99' (2023-12-03)
  → 'github:oxalica/rust-overlay/2cfb76b8e836a26efecd9f853bea78355a11c58a' (2023-12-09)
• Updated input 'zellij':
    'github:zellij-org/zellij/6370a897ed7d379f48e6a97e0264886c27a4b889' (2023-12-02)
  → 'github:zellij-org/zellij/6a1baaf0d694ea63294460e41b82195f8516b9bb' (2023-12-06)