Try bumping setup-miniconda to v3

Author: sspickle

.github/workflows/copy_conda_packages.yml

@@ -10,7 +10,7 @@ jobs:
 
     - uses: actions/checkout@v4
 
-    - uses: conda-incubator/setup-miniconda@v2
+    - uses: conda-incubator/setup-miniconda@v3
       with:
         auto-update-conda: true
         python-version: 3.10