flake.lock: Update

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/9305fe4e5c2a6fcf5ba6a3ff155720fbe4076569?narHash=sha256-tYBdgS56eXYaWVW3fsnPQ/nFlgWi/Z2Ymhyu21zVM98%3D' (2025-06-08)
  → 'github:hercules-ci/flake-parts/644e0fc48951a860279da645ba77fe4a6e814c5e?narHash=sha256-TVcTNvOeWWk1DXljFxVRp%2BE0tzG1LhrVjOGGoMHuXio%3D' (2025-07-21)
• Updated input 'home-manager':
    'github:nix-community/home-manager/18f3a0d21c3739a242aafa17c04c5238bbab5a41?narHash=sha256-r6YTIMprNCYcJcA4oZ0x1wPaHPPHUxb8CnyEeMkhGks%3D' (2025-06-13)
  → 'github:nix-community/home-manager/0cdfcdbb525b77b951c889b6131047bc374f48fe?narHash=sha256-CLQfNtUqirNVSYoW/kYbvL4PeeNasmZonaPnjO3%2B1YQ%3D' (2025-07-22)
• Updated input 'home-manager/nixpkgs':
    'github:NixOS/nixpkgs/3e3afe5174c561dee0df6f2c2b2236990146329f?narHash=sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU%3D' (2025-06-07)
  → 'github:NixOS/nixpkgs/6e987485eb2c77e5dcc5af4e3c70843711ef9251?narHash=sha256-RKwfXA4OZROjBTQAl9WOZQFm7L8Bo93FQwSJpAiSRvo%3D' (2025-07-16)
• Updated input 'nix-unit':
    'github:nix-community/nix-unit/be0d299e89a31e246c5472bf0e1005d4cc1e9e55?narHash=sha256-FV8uIBumYYmqOMEa6WR3lFxs0ocANT7bbawEDg%2BvWjo%3D' (2025-04-24)
  → 'github:nix-community/nix-unit/f0f20d931fa043905bc5fd50c5afa73f8eab67b3?narHash=sha256-mZbCa2eh6Iy9/PQHJytjM6U2rVHeIxQSlhDHJwTPWLk%3D' (2025-07-15)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/3e3afe5174c561dee0df6f2c2b2236990146329f?narHash=sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU%3D' (2025-06-07)
  → 'github:NixOS/nixpkgs/c87b95e25065c028d31a94f06a62927d18763fdf?narHash=sha256-NS6BLD0lxOrnCiEOcvQCDVPXafX1/ek1dfJHX1nUIzc%3D' (2025-07-19)

Author: github-actions[bot]