CI: Added conda update step and re-added gcsfs (#26413)

Author: WillAyd

ci/azure/windows.yml

@@ -19,10 +19,13 @@ jobs:
   steps:
     - powershell: Write-Host "##vso[task.prependpath]$env:CONDA\Scripts"
       displayName: Add conda to PATH
-    - script: conda env create --file ci\\deps\\azure-windows-$(CONDA_PY).yaml
+    - script: conda update -q -n base conda
+      displayName: Update conda
+    - script: conda env create -q --file ci\\deps\\azure-windows-$(CONDA_PY).yaml
       displayName: Create anaconda environment
     - script: |
         call activate pandas-dev
+        call conda list
         ci\\incremental\\build.cmd
       displayName: 'Build'
     - script: |

ci/deps/azure-windows-37.yaml

@@ -1,9 +1,11 @@
 name: pandas-dev
 channels:
   - defaults
+  - conda-forge
 dependencies:
   - beautifulsoup4
   - bottleneck
+  - gcsfs
   - html5lib
   - jinja2
   - lxml