remove shapely 2.0 pin

Author: emanuel-schmid

requirements/env_climada.yml

@@ -35,7 +35,6 @@ dependencies:
   - seaborn>=0.13
   - scikit-learn>=1.6
   - scipy>=1.14,<1.15  # 1.15 is not compatible with climada_petals, climada_petals.engine.test.test_supplychain fails with "'Series' has no attribute 'nonzero'"
-  - shapely<2.1  # in 2.1 'shapely.ops' has no attribute 'cascaded_union' anymore, which is used in black_marble
   - sparse>=0.15
   - statsmodels>=0.14
   - tabulate>=0.9