feat(storagetransfer): update the api

#### storagetransfer:v1

The following keys were added:
- schemas.AwsS3Data.properties.managedPrivateNetwork.type (Total Keys: 1)

googleapiclient/discovery_cache/documents/storagetransfer.v1.json

@@ -632,7 +632,7 @@
 }
 }
 },
-"revision": "20240429",
+"revision": "20240507",
 "rootUrl": "https://storagetransfer.googleapis.com/",
 "schemas": {
 "AgentPool": {
@@ -733,6 +733,10 @@
 "description": "Optional. The Resource name of a secret in Secret Manager. AWS credentials must be stored in Secret Manager in JSON format: { \"access_key_id\": \"ACCESS_KEY_ID\", \"secret_access_key\": \"SECRET_ACCESS_KEY\" } GoogleServiceAccount must be granted `roles/secretmanager.secretAccessor` for the resource. See [Configure access to a source: Amazon S3] (https://cloud.google.com/storage-transfer/docs/source-amazon-s3#secret_manager) for more information. If `credentials_secret` is specified, do not specify role_arn or aws_access_key. Format: `projects/{project_number}/secrets/{secret_name}`",
 "type": "string"
 },
+"managedPrivateNetwork": {
+"description": "Egress bytes over a Google-managed private network. This network is shared between other users of Storage Transfer Service.",
+"type": "boolean"
+},
 "path": {
 "description": "Root path to transfer objects. Must be an empty string or full path name that ends with a '/'. This field is treated as an object prefix. As such, it should generally not begin with a '/'.",
 "type": "string"