chore(deps): update dependency google-api-python-client to v2.73.0 (#270)

Author: renovate-bot

video/transcoder/requirements.txt

@@ -1,3 +1,3 @@
-google-api-python-client==2.72.0
+google-api-python-client==2.73.0
 grpcio==1.51.1
 google-cloud-video-transcoder==1.6.0