Update pipeline python-client

Author: chillaq

.harness/orgs/PROD/projects/Harness_Split/pipelines/pythonclient.yaml

@@ -89,7 +89,6 @@ pipeline:
                       pip install --upgrade pip
 
                       pip install -U setuptools pip wheel
-                      pip install aiohttp==3.8.4
 
                       echo "Python dependencies installed successfully"
                   timeout: 10m
@@ -105,6 +104,7 @@ pipeline:
                     command: |-
                       # Run pytest with JUnit XML report output
                       cd /harness
+                      pip install aiohttp==3.8.4
                       python setup.py test 
                     envVariables:
                       PYTHONPATH: ${PYTHONPATH}:.