flake/dev/flake.lock: Update

Flake lock file updates:

• Updated input 'dev-nixpkgs':
    'github:NixOS/nixpkgs/a676066377a2fe7457369dd37c31fd2263b662f4?narHash=sha256-zW/OFnotiz/ndPFdebpo3X0CrbVNf22n4DjN2vxlb58%3D' (2025-06-26)
  → 'github:NixOS/nixpkgs/92c2e04a475523e723c67ef872d8037379073681?narHash=sha256-yLuz5cz5Z%2Bsn8DRAfNkrd2Z1cV6DaYO9JMrEz4KZo/c%3D' (2025-07-21)
• Updated input 'home-manager':
    'github:nix-community/home-manager/366f00797b1efb70f2882d3da485e3c10fd3d557?narHash=sha256-Lh3dopA8DdY%2BZoaAJPrtkZOZaFEJGSYjOdAYYgOPgE4%3D' (2025-06-24)
  → 'github:nix-community/home-manager/fce051eaf881220843401df545a1444ab676520c?narHash=sha256-NCG6izg%2BB3zsCwcT6%2BssiWT3Y202jhOqGL/zh6fofa4%3D' (2025-07-22)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/ac8e6f32e11e9c7f153823abc3ab007f2a65d3e1?narHash=sha256-0IEdQB1nS%2BuViQw4k3VGUXntjkDp7aAlqcxdewb/hAc%3D' (2025-06-26)
  → 'github:numtide/treefmt-nix/421b56313c65a0815a52b424777f55acf0b56ddf?narHash=sha256-tzbhc4XttkyEhswByk5R38l%2BztN9UDbnj0cTcP6Hp9A%3D' (2025-07-20)

Author: nixvim-ci[bot]