chore(deps): update dependency google-cloud-video-transcoder to v1.4.3 (#248)

Author: renovate-bot

video/transcoder/requirements.txt

@@ -1,3 +1,3 @@
 google-api-python-client==2.64.0
 grpcio==1.49.1
-google-cloud-video-transcoder==1.4.2
+google-cloud-video-transcoder==1.4.3