Bump the cloud-google-com-go group in /notifier/pubsub with 2 updates #1472

Job	Run time
Test (stable)	16s
Test (oldstable)	28s
Test (provider/file, stable)	53s
Test (provider/file, oldstable)	54s
Test (provider/pflag, stable)	10s
Test (provider/pflag, oldstable)	22s
Test (provider/appconfig, stable)	1m 34s
Test (provider/appconfig, oldstable)	1m 31s
Test (provider/s3, stable)	28s
Test (provider/s3, oldstable)	43s
Test (provider/parameterstore, stable)	54s
Test (provider/parameterstore, oldstable)	53s
Test (notifier/sns, stable)	45s
Test (notifier/sns, oldstable)	51s
Test (provider/azappconfig, stable)	40s
Test (provider/azappconfig, oldstable)	41s
Test (provider/azblob, stable)	47s
Test (provider/azblob, oldstable)	48s
Test (notifier/azservicebus, stable)	47s
Test (notifier/azservicebus, oldstable)	37s
Test (provider/secretmanager, stable)	38s
Test (provider/secretmanager, oldstable)	48s
Test (provider/gcs, stable)	1m 23s
Test (provider/gcs, oldstable)	1m 19s
Test (notifier/pubsub, stable)	1m 0s
Test (notifier/pubsub, oldstable)	53s
All Tests	1s
	21m 4s

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