Don't use Mambaforge

Author: mdpiper

.github/workflows/test.yml

@@ -28,7 +28,6 @@ jobs:
       - uses: conda-incubator/setup-miniconda@v3
         with:
           python-version: ${{ matrix.python-version }}
-          miniforge-variant: Mambaforge
           miniforge-version: latest
 
       - name: Test