conda environment: workaround for #403, gdal 3.4.1 / fona issue

(cherry picked from commit cbcd859)

Author: emanuel-schmid

requirements/env_climada.yml

@@ -8,6 +8,7 @@ dependencies:
   - cfgrib>=0.9.7,<0.9.10  # 0.9.10 cannot read the icon_grib files from https://opendata.dwd.de
   - contextily>=1.0,<1.2  # 1.2 has removed the deprecated contextily.sources
   - dask>=2.25
+  - gdal!=3.4.1  # has an issue with fiona on Windows (#403)
   - geopandas>=0.8
   - h5py>=2.10
   - haversine>=2.3