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/4524271976b625a4a605beefd893f270620fd751?narHash=sha256-%2BuWLQZccFHwqpGqr2Yt5VsW/PbeJVTn9Dk6SHWhNRPw%3D' (2025-09-01)
• Updated input 'home-manager':
    'github:nix-community/home-manager/18f3a0d21c3739a242aafa17c04c5238bbab5a41?narHash=sha256-r6YTIMprNCYcJcA4oZ0x1wPaHPPHUxb8CnyEeMkhGks%3D' (2025-06-13)
  → 'github:nix-community/home-manager/a504aee7d452ecf8881b933b1eb573535a543a03?narHash=sha256-4YoMTUZRXb2XggJi11lSJnehrwM6u31Ylu2cOzb96JQ%3D' (2025-09-18)
• Updated input 'home-manager/nixpkgs':
    'github:NixOS/nixpkgs/3e3afe5174c561dee0df6f2c2b2236990146329f?narHash=sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU%3D' (2025-06-07)
  → 'github:NixOS/nixpkgs/c23193b943c6c689d70ee98ce3128239ed9e32d1?narHash=sha256-hLEO2TPj55KcUFUU1vgtHE9UEIOjRcH/4QbmfHNF820%3D' (2025-09-13)
• Updated input 'nix-unit':
    'github:nix-community/nix-unit/be0d299e89a31e246c5472bf0e1005d4cc1e9e55?narHash=sha256-FV8uIBumYYmqOMEa6WR3lFxs0ocANT7bbawEDg%2BvWjo%3D' (2025-04-24)
  → 'github:nix-community/nix-unit/7a952131cbef9cb21953ae70ad09249541848f07?narHash=sha256-DP5SCFx0AsbPnT7KzEl3gQNWPF70Tlcc%2BjtLkqupabI%3D' (2025-09-13)
• Removed input 'nix-unit/nix-github-actions'
• Removed input 'nix-unit/nix-github-actions/nixpkgs'
• Updated input 'nix-unit/treefmt-nix':
    'github:numtide/treefmt-nix/357cda84af1d74626afb7fb3bc12d6957167cda9?narHash=sha256-9qOp6jNdezzLMxwwXaXZWPXosHbNqno%2Bf7Ii/xftqZ8%3D' (2024-12-08)
  → 'github:numtide/treefmt-nix/7d81f6fb2e19bf84f1c65135d1060d829fae2408?narHash=sha256-2vX8QjO5lRsDbNYvN9hVHXLU6oMl%2BV/PsmIiJREG4rE%3D' (2025-08-10)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/3e3afe5174c561dee0df6f2c2b2236990146329f?narHash=sha256-frdhQvPbmDYaScPFiCnfdh3B/Vh81Uuoo0w5TkWmmjU%3D' (2025-06-07)
  → 'github:NixOS/nixpkgs/c23193b943c6c689d70ee98ce3128239ed9e32d1?narHash=sha256-hLEO2TPj55KcUFUU1vgtHE9UEIOjRcH/4QbmfHNF820%3D' (2025-09-13)

Author: github-actions[bot]