docs: clarified gcs_bucket field of the SecuritySettings message, fix: remove proto files root (#315)

* docs: clarified gcs_bucket field of the SecuritySettings message

PiperOrigin-RevId: 477778532

Source-Link: googleapis/googleapis@22d2bda

Source-Link: googleapis/googleapis-gen@821f121
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* docs: clarified gcs_bucket field of the SecuritySettings message

PiperOrigin-RevId: 478035442

Source-Link: googleapis/googleapis@8cb255f

Source-Link: googleapis/googleapis-gen@461eeeb
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* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: gcf-owl-bot[bot]

packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/advanced_settings.proto

@@ -16,6 +16,7 @@ syntax = "proto3";
 
 package google.cloud.dialogflow.cx.v3;
 
+import "google/api/field_behavior.proto";
 
 option cc_enable_arenas = true;
 option csharp_namespace = "Google.Cloud.Dialogflow.Cx.V3";

packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3/security_settings.proto

@@ -231,10 +231,11 @@ message SecuritySettings {
       OGG = 3;
     }
 
-    // Cloud Storage bucket to export audio record to. You need to grant
-    // `service-<Conversation Project
-    // Number>@gcp-sa-dialogflow.iam.gserviceaccount.com` the `Storage Object
-    // Admin` role in this bucket.
+    // Cloud Storage bucket to export audio record to.
+    // Setting this field would grant the Storage Object Creator role to
+    // the Dialogflow Service Agent.
+    // API caller that tries to modify this field should have the permission of
+    // storage.buckets.setIamPolicy.
     string gcs_bucket = 1;
 
     // Filename pattern for exported audio.

packages/google-cloud-dialogflow-cx/protos/google/cloud/dialogflow/cx/v3beta1/security_settings.proto

@@ -231,10 +231,11 @@ message SecuritySettings {
       OGG = 3;
     }
 
-    // Cloud Storage bucket to export audio record to. You need to grant
-    // `service-<Conversation Project
-    // Number>@gcp-sa-dialogflow.iam.gserviceaccount.com` the `Storage Object
-    // Admin` role in this bucket.
+    // Cloud Storage bucket to export audio record to.
+    // Setting this field would grant the Storage Object Creator role to
+    // the Dialogflow Service Agent.
+    // API caller that tries to modify this field should have the permission of
+    // storage.buckets.setIamPolicy.
     string gcs_bucket = 1;
 
     // Filename pattern for exported audio.