Update to the latest ipex

[janbernloehr]

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Description

Update to the latest torch + ipex provided by intel (i.e. updating from 2.0 to 2.1); also install torchvision which is required by several workflows.

Screenshots/videos:

Checklist:

• [x] I have read contributing wiki page
• [x] I have performed a self-review of my own code
• [x] My code follows the style guidelines
• [x] My code passes tests