changing pythonpath to app in github directory

.github/workflows/python-app.yml

@@ -28,7 +28,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
+      - name: Set PYTHONPATH
+        run: echno "PYTHONPATH=$PYTHONPATH:$(pwd)/app" >> $GITHUB_ENV
       - name: Run tests
-        working-directory: ./tests/test_routers
+        working-directory: ./tests
         run: |
           pytest