Upgrade to candle 0.4.1

[laggui]

The candle team recently released version 0.4.0 (and 0.4.1 patch) which will fix a couple of issues we've been waiting on.

Checklist

• Confirmed that run-checks all script has been executed (on both linux/win).
• Made sure the book is up to date with changes in this PR.

Related Issues/PRs

Closes issue #1178
PR #1300 will be able to be merged

Changes

• Fixed python main entrypoint in pytorch import book example (def main() was never called)
• Removed candle windows safeguards
• Bumped candle-core from 0.3.3 to 0.4.1

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 85.44%. Comparing base (40bf392) to head (ed03df3).

Files	Patch %	Lines
crates/burn-candle/src/ops/module.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1382   +/-   ##
=======================================
  Coverage   85.44%   85.44%           
=======================================
  Files         593      593           
  Lines       67968    67966    -2     
=======================================
  Hits        58076    58076           
+ Misses       9892     9890    -2     

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[antimora]

Thank you for finding all the issues and fixing them.