Ensure that PIO Core System Info works on all supported Pythons

Author: ivankravets

.github/workflows/core.yml

@@ -27,6 +27,10 @@ jobs:
           python -m pip install --upgrade pip
           pip install tox
 
+      - name: Core System Info
+        run: |
+          tox -e py
+
       - name: Python Lint
         if: ${{ matrix.python-version != '3.6' }}
         run: |