Update to latest version of miniconda action

Author: mwcraig

.github/workflows/copy_conda_packages.yml

@@ -10,7 +10,7 @@ jobs:
 
     - uses: actions/checkout@v1
 
-    - uses: goanpeca/setup-miniconda@v1
+    - uses: goanpeca/setup-miniconda@v2
       with:
         auto-update-conda: true
         python-version: 3.7