flake/dev/flake.lock: Update

Flake lock file updates:

• Updated input 'dev-nixpkgs':
    'github:NixOS/nixpkgs/ceb24d94c6feaa4e8737a8e2bd3cf71c3a7eaaa0?narHash=sha256-lIlUKVGCGsh0Q2EA7/6xRtKUZjaQ/ur8uUyY%2BMynHXQ%3D' (2025-07-06)
  → 'github:NixOS/nixpkgs/be9e214982e20b8310878ac2baa063a961c1bdf6?narHash=sha256-HM791ZQtXV93xtCY%2BZxG1REzhQenSQO020cu6rHtAPk%3D' (2025-07-09)
• Updated input 'home-manager':
    'github:nix-community/home-manager/fd9e55f5fac45a26f6169310afca64d56b681935?narHash=sha256-aDDC0CHTlL7QDKWWhdbEgVPK6KwWt%2Bca0QkmHYZxMzI%3D' (2025-07-06)
  → 'github:nix-community/home-manager/bf893ad4cbf46610dd1b620c974f824e266cd1df?narHash=sha256-mCHfZhQKdTj2JhCFcqfOfa3uKZbwUkPQbd0/zPnhOE8%3D' (2025-07-13)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/ac8e6f32e11e9c7f153823abc3ab007f2a65d3e1?narHash=sha256-0IEdQB1nS%2BuViQw4k3VGUXntjkDp7aAlqcxdewb/hAc%3D' (2025-06-26)
  → 'github:numtide/treefmt-nix/c9d477b5d5bd7f26adddd3f96cfd6a904768d4f9?narHash=sha256-19m7P4O/Aw/6%2BCzncWMAJu89JaKeMh3aMle1CNQSIwM%3D' (2025-07-09)

Author: nixvim-ci[bot]