Reintroduce uv into CI actions

[SchrodingersGat]

• Removed in Fix sales order shipment / completed buttons #7305
• New version of uv has broken CI pipeline

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.78%. Comparing base (2fafb7f) to head (1594067).
Report is 315 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7309      +/-   ##
==========================================
- Coverage   83.78%   83.78%   -0.01%     
==========================================
  Files        1048     1048              
  Lines       45976    45975       -1     
  Branches     1386     1386              
==========================================
- Hits        38522    38521       -1     
  Misses       7091     7091              
  Partials      363      363              

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[SchrodingersGat]

@matmair I have raised this so we don't neglect to add uv back into the pipeline. But it looks like the recent updates to uv have ... broken things

[matmair]

No idea why this is not working anymore, I will look at the changelogs ASAP

[matmair]

Ok this seems somewhat intentional / not considered a bug astral-sh/uv#3765 (comment)

[matmair]

And astral-sh/uv#3767

[matmair]

At this point, I think we should either pin the latest working version or just go back to pip. There are 200 more important issues than fixing the CI every few uv updates

[SchrodingersGat]

I'd support just going back to pip. uv has caused a lot of headaches and I agree it is not worth our time chasing this down