Update run_tests.yml

Author: DerekMelchin

.github/workflows/run_tests.yml

@@ -10,6 +10,11 @@ jobs:
     steps:
       - uses: actions/checkout@v3
 
+      - name: Install dependencies
+        run: |-
+          python -m pip install --upgrade pip 
+          pip install pytest
+
       - name: Free space
         run: df -h && rm -rf /opt/hostedtoolcache* && df -h