Update versions of checkout/conda actions

Author: timj

.github/workflows/build.yaml

@@ -15,12 +15,11 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - uses: conda-incubator/setup-miniconda@v2
+      - uses: conda-incubator/setup-miniconda@v3
         with:
           python-version: ${{ matrix.pyversion }}
-          auto-update-conda: true
           channels: conda-forge,defaults
           miniforge-variant: Miniforge3
           use-mamba: true