Update ms5.yaml

.github/workflows/ms5.yaml

@@ -25,7 +25,7 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install pylint flask flask_cors flasgger pytest
+          pip install pylint flask flask_cors flasgger pytest requests
 
       #Run pylint on all Python files 
       - name: Analyze code with pylint