Potential fix to memory issue for GitHub Runners

.github/workflows/python_test.yml

@@ -38,6 +38,21 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+    - name: Free Disk Space (Ubuntu)
+      uses: jlumbroso/free-disk-space@main
+      with:
+        # this might remove tools that are actually needed,
+        # if set to "true" but frees about 6 GB
+        tool-cache: false
+
+        # all of these default to true, but feel free to set to
+        # "false" if necessary for your workflow
+        android: true
+        dotnet: true
+        haskell: true
+        large-packages: true
+        docker-images: true
+        swap-storage: true
     - name: Set up Python 3.11
       uses: actions/setup-python@v3
       with: