flake/dev/flake.lock: Update

Flake lock file updates:

• Updated input 'dev-nixpkgs':
    'github:NixOS/nixpkgs/6027c30c8e9810896b92429f0092f624f7b1aace?narHash=sha256-cnL5WWn/xkZoyH/03NNUS7QgW5vI7D1i74g48qplCvg%3D' (2025-07-25)
  → 'github:NixOS/nixpkgs/871381d997e4a063f25a3994ce8a9ac595246610?narHash=sha256-J1P0aQymehe8AHsID9wwoMjbaYrIB2eH5HftoXhF9xk%3D' (2025-07-29)
• Updated input 'home-manager':
    'github:nix-community/home-manager/a7b7c6f520b51f3577bd6b7a7493d2cdbcb22ec6?narHash=sha256-5i5%2B9pPq80C37a/xqepLRYMHNw8CSh1S7o0ps%2Bkkl3k%3D' (2025-07-28)
  → 'github:nix-community/home-manager/d732b648e5a7e3b89439ee25895e4eb24b7e5452?narHash=sha256-fsld/crW9XRodFUG1GK8Lt0ERv6ARl9Wj3Xb0x96J4w%3D' (2025-07-30)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/2673921c03d6e75fdf4aa93e025772608d1482cf?narHash=sha256-Bv9h1AJegLI8uAhiJ1sZ4XAndYxhgf38tMgCQwiEpmc%3D' (2025-07-25)
  → 'github:numtide/treefmt-nix/6b9214fffbcf3f1e608efa15044431651635ca83?narHash=sha256-8rkd13WfClfZUBIYpX5dvG3O9V9w3K9FPQ9rY14VtBE%3D' (2025-07-29)

Author: nixvim-ci[bot]