feat: newest comfyui+torch+cu124 by default; fix: broken qrcode dep

[tazlin]

• feat: use torch>=2.4.1 and cu124 by default
  • There are purported potential performance benefits and potential stability improvements.
• feat: comfyui 3bb4dec
  • These changes somehow broke our layerdiffusion implementation. Fixed via fix: prevent comfyui internals error with layer diffusion, though I do worry that the code in that commit will regress in later changes to comfyui.
• fix: pin dep qrcode to 7.4.2
  • See https://github.com/Haidra-Org/hordelib/issues/346