Revert "Use pip to install geopandas on ci_tests_dev workflow"

This reverts commit 2ce685e.

Author: weiji14

.github/workflows/ci_tests_dev.yaml

@@ -89,10 +89,10 @@ jobs:
         run: |
           mamba install python=${{ matrix.python-version }} \
                         ninja cmake libblas libcblas liblapack fftw libgdal \
-                        ghostscript libnetcdf hdf5 zlib curl pcre make
+                        geopandas ghostscript libnetcdf hdf5 zlib curl pcre make
           pip install --pre --prefer-binary \
                         numpy pandas xarray netCDF4 packaging \
-                        dvc fiona geopandas ipython 'pytest>=6.0' pytest-cov \
+                        dvc ipython 'pytest>=6.0' pytest-cov \
                         pytest-mpl sphinx-gallery tomli
 
       # Build and install latest GMT from GitHub