flake.lock: Update (#472)

Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/4bfce11ea820df0359f73736fd59c7e8f53641a6?narHash=sha256-X32LTSDqUdVqMy85WYdRgyt0I75wc4Lhi9j%2BlrCDR8w%3D' (2026-04-20)
  → 'github:nix-community/home-manager/c555a4a34a260493be5adb795c54e013c58f2d34?narHash=sha256-zGuW7C4tsScib2560yE5VV6lY/MdRs30aU9cbg3RP%2BU%3D' (2026-04-20)
• Updated input 'homebrew-cask':
    'github:homebrew/homebrew-cask/a282f543f9af03ba4414f258a103b05248589a0d?narHash=sha256-8e72JYcGIKx1rFZVtNA6NXvWZx6jzexJa1Bv2dHlSaQ%3D' (2026-04-20)
  → 'github:homebrew/homebrew-cask/18875f5fc1e2553ef80fb5c582efb003c687d241?narHash=sha256-/ztLPP7c1eZpTVLiWZ8WU8Tr17bfkGnl4PfUdGrL9mg%3D' (2026-04-21)
• Updated input 'homebrew-core':
    'github:homebrew/homebrew-core/f7dbbe93c6e6be912a8b87153999cacecc8ccd90?narHash=sha256-Wu%2B9kGRVOC7mMaUM20ZXdC2LeHmAWIvo5rmuxvZZzmo%3D' (2026-04-20)
  → 'github:homebrew/homebrew-core/ba02c9d346bc890ec2f9d1516863bc6d5ce2955f?narHash=sha256-idNvaZVKELz6dV6sC%2BSO02aigMz7EHlbCTLQSleAvpY%3D' (2026-04-21)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/4bd9165a9165d7b5e33ae57f3eecbcb28fb231c9?narHash=sha256-l/iNYDZ4bGOAFQY2q8y5OAfBBtrDAaPuRQqWaFHVRXM%3D' (2026-04-14)
  → 'github:NixOS/nixpkgs/b12141ef619e0a9c1c84dc8c684040326f27cdcc?narHash=sha256-ZSK0NL4a1BwVbbTBoSnWgbJy9HeZFXLYQizjb2DPF24%3D' (2026-04-18)
• 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