flake.lock: Update

Flake lock file updates:

• Updated input 'dream2nix':
    'github:nix-community/dream2nix/262198033e23e9ee832f0cc8133d38f07598f555' (2023-12-13)
  → 'github:nix-community/dream2nix/936208ae7d88a178a0bcf7e6ac21bb6b87f6c8ea' (2024-02-06)
• Updated input 'flake-utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/1ef2e671c3b0c19053962c07dbda38332dcebf26' (2024-01-15)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/886c9aee6ca9324e127f9c2c4e6f68c2641c8256' (2023-12-18)
  → 'github:NixOS/nixpkgs/8cc79aa39bbc6eaedaf286ae655b224c71e02907' (2024-02-06)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/20fd62b0891707a1db8117d09fc3e65a1cd0f6d7' (2023-12-19)
  → 'github:oxalica/rust-overlay/be473291b92e4e84e84a1e04e57481c848060c6c' (2024-02-06)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/e19071f9958c8da4f4347d3d78790d97e98ba22f' (2023-12-02)
  → 'github:Mic92/sops-nix/23f61b897c00b66855074db471ba016e0cda20dd' (2024-02-04)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/dfb95385d21475da10b63da74ae96d89ab352431' (2023-11-25)
  → 'github:NixOS/nixpkgs/9a333eaa80901efe01df07eade2c16d183761fa3' (2024-01-22)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/e82f32aa7f06bbbd56d7b12186d555223dc399d1' (2023-11-12)
  → 'github:numtide/treefmt-nix/c6153c2a3ff4c38d231e3ae99af29b87f1df5901' (2024-01-28)