Relax dependency caps once fixed

[dennisbader]

There are multiple issues from some of our depencies. We should relax the version caps again once the issues are fixed:

• numpy<1.24.0 due to shap: track issues here and here (fixed with relax numpy upper version cap #1883)
• holidays<0.25.0 due to prophet/holidays: track issues here and PR here (fixed with relax holidays version cap #1805)
• catboost<1.2.0 due to catboost with cmake (fixed with make prophet, lightgbm and catboost optional #1589, catboost is now an optional dependency)

[dennisbader]

Update: Looks like shap is about to release a new version, see here

[thomasburgess]

catboost < 1.2 is really uncooperative with m1 macs, it sure would be nice to lift that cap!

[dennisbader]

I think we'll exclude catboost from our dependencies but continue to support the model with our wrapper.
We then leave the installation to the user.

[dennisbader]

We just merged #1589, making Prophet, LightGBM, and CatBoost optional dependencies (they are excluded from the default darts dependencies).

This will be released tomorrow 🚀

Closing the issue now.