Use python3,10

.github/workflows/test_containers_singularity_gpu.yml

@@ -29,6 +29,9 @@ jobs:
       options: --privileged --gpus all
     steps:
       - uses: actions/checkout@v4
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
 
       - name: Install dependencies
         run: |