Changed github python version to 3.10

.github/workflows/runtest.yaml

@@ -9,10 +9,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python 3.12
+      - name: Set up Python 3.10
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.10
 
       - name: Install dev dependencies
         run: python -m pip install -U pip flake8 bandit mypy
@@ -41,10 +41,10 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - name: Set up Python 3.12
+      - name: Set up Python 3.10
         uses: actions/setup-python@v5
         with:
-          python-version: 3.12
+          python-version: 3.10
 
       - name: Install build and test dependencies
         run: |