Install rasterio through conda-forge (for windows)

Author: davidbrochart

.github/workflows/ui-tests.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python: [3.8]
       fail-fast: false
 
@@ -18,6 +18,15 @@ jobs:
       - name: Base Setup
         uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
 
+      - name: Setup conda
+        uses: conda-incubator/setup-miniconda@v2
+        with:
+          mamba-version: "*"
+          channels: conda-forge
+
+      - name: Mamba install rasterio
+        run: mamba install rasterio
+
       - name: Install xarray-leaflet
         run: |
           python -m pip install --upgrade jupyterlab~=3.0