pin pandas to 2.3.*

Author: emanuel-schmid

requirements/env_climada.yml

@@ -22,7 +22,7 @@ dependencies:
   - numexpr>=2.13
   - openpyxl>=3.1
   - osm-flex>=1.1  # this is only required for running the tutorials, not for the CLIMADA package itself
-  - pandas>=2.3
+  - pandas>=2.3,<3.0  # petals does not run with 3.0 (... and issue #1215)
   - pathos>=0.3
   - peewee>=3.18
   - pint>=0.24