Merge pull request #81 from edx/nadeem/update_virtualenv

fix: update virtualenv version

Author: nadeemshahzad

playbooks/roles/common_vars/defaults/main.yml

@@ -165,7 +165,7 @@ common_pip_pkgs:
   - pip=={{ COMMON_PIP_VERSION }}
   - configparser==4.0.2
   - setuptools==44.1.0
-  - virtualenv==20.2.0
+  - virtualenv==20.27.0
   - zipp==1.2.0
   - boto3
   - importlib-resources==3.2.1