chore(deps): update dependency google-api-python-client to v2.6.0 (#109)

Author: renovate-bot

requirements.txt

@@ -5,4 +5,4 @@ pg8000==1.19.5
 python-tds==1.11.0
 pyopenssl==20.0.1
 Requests==2.25.1
-google-api-python-client==2.5.0
+google-api-python-client==2.6.0