flake.lock: Update (#521)

Flake lock file updates:

• Updated input 'attic/nixpkgs':
    'github:NixOS/nixpkgs/421eebfd0ec7bccd4abe826ce62d7e6e83129493?narHash=sha256-/FCliTPgiuV1owejZFNx3Ch9irdvkOfOFl%2BHHZ%2BDrtM%3D' (2026-07-20)
  → 'github:NixOS/nixpkgs/89570f24e97e614aa34aa9ab1c927b6578a43775?narHash=sha256-EMzXKmnOtBQ2MnvpiNOm7E%2BkOMvdPrIKaeg52Tip2Uk%3D' (2026-06-23)
• Updated input 'home-manager':
    'github:nix-community/home-manager/6d8d61567802997f9ec3086b2a837e3ef31fac16?narHash=sha256-t86pRs7IPs3RTMPueWvvdcxyTFrctHAv2Jl7jnjsSf8%3D' (2026-07-22)
  → 'github:nix-community/home-manager/3b0e6bbd65869af1beadf5963a99befc179d209f?narHash=sha256-cgRTWuG%2Bu1tBPhm01JrId2k0Bni09phVJ1Q0BZlRd7M%3D' (2026-07-23)
• Updated input 'homebrew-cask':
    'github:homebrew/homebrew-cask/8d2d5a15f538c047d51b36055b14d53db8ef3cf4?narHash=sha256-7C%2B7gDApeb7JG4VXI7v0ZqiYnBRJhbqbY1Y2OI6cPxk%3D' (2026-07-22)
  → 'github:homebrew/homebrew-cask/45658406e9109543c11041e3dc0b696c2e804101?narHash=sha256-5Iuc%2B98EI5%2Bgz9StEagqzwYaVkmtb9h1V7YzOipLKhc%3D' (2026-07-23)
• Updated input 'homebrew-core':
    'github:homebrew/homebrew-core/6ae532c820ba2691464b92eb3e27f79f676c69b0?narHash=sha256-opJtiqzzMqguYiEiTmV5dI15jeEX8h5YXLA4QbhI9nQ%3D' (2026-07-22)
  → 'github:homebrew/homebrew-core/76c525d4aca67de44e8c5c320ec9b90360beb73d?narHash=sha256-ZtA7bmAyX0NKR3yO7Pe5E9rka1EWbCuQcjKn/rree8E%3D' (2026-07-23)
• Updated input 'nixos-hardware':
    'github:NixOS/nixos-hardware/779c32a00155994c86cde8213a8dd4df139d4355?narHash=sha256-rkSPTePrKqs4dg%2Bi7ZFCq93%2BHrClac6oSwXX927SVjA%3D' (2026-07-17)
  → 'github:NixOS/nixos-hardware/a017f5b72210026af5b3ac5949f08d94380a6fbd?narHash=sha256-1CfD8ZUjCkTgjsneLZ/lxCHhgDfqxxE7/GX0MmsgiqA%3D' (2026-07-22)
• Updated input 'systems':
    'path:./flake.systems.nix'
  → 'path:./flake.systems.nix'

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: stackptr