Fix prints

Author: janbridley

.github/workflows/run_tests.yaml

@@ -37,7 +37,10 @@ jobs:
         python --version
         uv pip install . -r ${{ inputs.requirements-file }} -v --reinstall --system
         python -c "import parsnip; print('parsnip', parsnip.__version__)"
-        python -c "import sys; print('GIL: ', sys._is_gil_enabled)"
+
+        if [ "${{ inputs.freethreaded }}" = "true" ]; then
+          python -c "import sys; print('GIL: ', sys._is_gil_enabled)"
+        fi
 
     - name: Test with pytest
       run: python -m ${{ runner.os != 'Windows' && 'pytest' || 'pytest tests' }} -v -n auto