Update python-version to 3.12

Author: mohanson

.github/workflows/daily-runtime-validation.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Initialize Python environment
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.12'
           cache: pip
 
       - name: Install dependencies

.github/workflows/test-runner.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Initialize Python environment
         uses: actions/setup-python@v4
         with:
-          python-version: '3.10'
+          python-version: '3.12'
           cache: pip
 
       - name: Install dependencies
@@ -44,4 +44,4 @@ jobs:
 
       - name: Run tests
         working-directory: test-runner
-        run: PYTHONPATH=. coverage run
+        run: PYTHONPATH=. coverage run