⚙️ Fix the broken CI because of parameter value setting of reusable workflow.

Author: Chisanan232

.github/workflows/test_python_project_ci_multi-tests.yaml

@@ -91,7 +91,7 @@ jobs:
     needs: prep-testbed_unit-test
     uses: ./.github/workflows/rw_run_test.yaml
     with:
-      python_version: 3.10
+      python_version: '3.10'
       test_type: unit-test
       all_test_items_paths: ${{needs.prep-testbed_unit-test.outputs.all_test_items}}