BLD: Correct gcsfs install on Azure (#26358)

Author: gfyoung

ci/incremental/setup_conda_environment.cmd

@@ -14,9 +14,10 @@ conda list
 conda remove --all -q -y -n pandas-dev
 @rem Scipy, CFFI, jinja2 and IPython are optional dependencies, but exercised in the test suite
 conda env create --file=ci\deps\azure-windows-%CONDA_PY%.yaml
-conda install -c conda-forge gcsfs
 
 call activate pandas-dev
+@rem gh-26345: we need to separate this out so that Azure doesn't complain
+conda install -c conda-forge gcsfs
 conda list
 
 if %errorlevel% neq 0 exit /b %errorlevel%