chore(main): release google-cloud-certificate_manager-v1 0.4.2 (googl…

…eapis#20581)

chore(main): release google-cloud-bigtable-v2 0.9.0 (googleapis#20580)

chore(main): release google-cloud-advisory_notifications 0.1.0 (googl…

…eapis#20579)

chore(main): release google-cloud-vision 1.3.0 (googleapis#20570)

chore(main): release google-cloud-video_intelligence 3.3.0 (googleapi…

…s#20566)

chore(main): release google-cloud-translate 3.4.0 (googleapis#20565)

chore(main): release google-cloud-text_to_speech 1.5.0 (googleapis#20564

)

chore(main): release google-cloud-speech-v1 0.12.0 (googleapis#20562)

chore(main): release google-cloud-speech-v1p1beta1 0.17.0 (googleapis…

…#20563)

chore(main): release google-cloud-speech 1.5.0 (googleapis#20561)