Add support for numpy>=2.0.0

[dennisbader]

Checklist before merging this PR:

• Mentioned all issues that this PR fixes or addresses.
• Summarized the updates of this PR under Summary.
• Added an entry under Unreleased in the Changelog.

Fixes #2414.

Summary

• It seems like all dependencies have added support for numpy>=2.0.0 (see the tracking in Support numpy 2.0.0 #2414). This PR relaxes the upper version cap in our core.txt requirements.

TODO

• fix macos build
• fix ubuntu build
• remove TBATS, BATS dependencies that still rely on pmdarima (see Change TBATS Backend from tbats to statsforecast #2781)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.48%. Comparing base (f5d9055) to head (63ddb77).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2771      +/-   ##
==========================================
- Coverage   94.56%   94.48%   -0.08%     
==========================================
  Files         145      145              
  Lines       15445    15448       +3     
==========================================
- Hits        14605    14596       -9     
- Misses        840      852      +12     

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[lorentzenchr]

That's great news, thanks @dennisbader.

[dennisbader]

No worries @lorentzenchr :) We've already released a new Darts version (0.35.0) that comes with it.