Adjust setup-miniconda parameters

This is in hopes of resolving sporadic errors.
Ref: <conda-incubator/setup-miniconda#274>

.github/workflows/test.yml

@@ -98,11 +98,9 @@ jobs:
       - name: Set up Python ${{ matrix.python-version }}
         uses: conda-incubator/setup-miniconda@v2
         with:
-          mamba-version: "*"
-          channels: conda-forge,defaults
-          channel-priority: true
+          miniforge-variant: Mambaforge
+          miniforge-version: latest
           python-version: ${{ matrix.python-version }}
-          auto-update-conda: true
 
       - name: Create matrix id
         id: matrix-id
@@ -241,4 +239,4 @@ jobs:
         uses: codecov/codecov-action@v3
         with:
           directory: ./coverage/
-          fail_ci_if_error: true
+          fail_ci_if_error: true