gpu-v3.5.0-ls54

CI Report:

N/A

LinuxServer Changes:

• Switch to new upstream repo (gpu) by @thespad in #65

Full Changelog: gpu-v3.5.0-ls53...gpu-v3.5.0-ls54

Remote Changes:

• Bump torch to avoid regression: pytorch/pytorch#146792
• Use find_spec to avoid importing modules for backend check