Update miniforge action

Author: dwhswenson

.github/workflows/ci.yml

@@ -21,20 +21,20 @@ jobs:
     strategy:
       matrix:
         CONDA_PY:
-          - 3.7
-          - 3.8
-          - 3.9
+          - 3.12
+          - 3.11
+          - 3.10
 
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-python@v2
-      - uses: conda-incubator/setup-miniconda@v2
+      - uses: conda-incubator/setup-miniconda@v3
         with:
           auto-update-conda: true
           python-version: ${{ matrix.CONDA_PY }}
           environment-file: binder/environment.yml
           activate-environment: ops-tutorial
-          miniforge-variant: Mambaforge
+          miniforge-version: latest
       - name: "Install testing tools"
         run: python -m pip install pytest nbval
       - name: "Conda info"