Merge pull request #136 from pyiron/mini312

Use python 3.12 for mini test

Author: jan-janssen

.github/workflows/mini.yml

@@ -21,7 +21,7 @@ jobs:
     - name: Setup Mambaforge
       uses: conda-incubator/setup-miniconda@v2
       with:
-        python-version: '3.11'
+        python-version: '3.12'
         miniforge-variant: Mambaforge
         channels: conda-forge
         channel-priority: strict