Update Python to 3.10 in GitHub Actions

Author: vmihalyi-graphisoft

.github/workflows/build.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup Python
         uses: actions/setup-python@v5
         with:
-          python-version: 3.8
+          python-version: 3.10
 
       - name: Setup Xcode
         if: runner.os == 'macOS'