Update build.yml

Use Miniforge in build

Author: liamtoney

Diff for: .github/workflows/build.yml

@@ -22,11 +22,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Set up conda environment
-        uses: conda-incubator/setup-miniconda@v2
+        uses: conda-incubator/setup-miniconda@v3
         with:
           activate-environment: infresnel
           environment-file: environment.yml
-          miniforge-variant: Mambaforge
+          miniforge-version: latest
           use-mamba: true
       - name: Install development packages
         run: pip install --requirement requirements.txt