chore(deps): update dependency google-cloud-storage-transfer to v1.3.0 (GoogleCloudPlatform#7804)

Co-authored-by: Charles Engelke 

Author: renovate-bot

storagetransfer/requirements.txt

@@ -1,4 +1,4 @@
-google-cloud-storage-transfer==1.2.1
+google-cloud-storage-transfer==1.3.0
 google-api-python-client==2.41.0
 google-auth==2.6.2
 google-auth-httplib2==0.1.0