💚 Updates simzoo gh-action

.github/workflows/simzoo.yml

@@ -104,6 +104,7 @@ jobs:
           path: ${{ env.pythonLocation }}
           key: ${{ env.pythonLocation }}-${{ hashFiles('setup.py') }}-${{ hashFiles('setup.cfg') }}-${{ hashFiles('pyproject.toml') }}
       - name: Update pip
+        if: steps.cache-python-env.outputs.cache-hit != 'true'
         run: |
           python -m pip install --upgrade pip
       - name: Install the mlc package with its dependencies