Synchronize new proto/yaml changes.

PiperOrigin-RevId: 277850256

google/cloud/dialogflow/v2beta1/intent.proto

@@ -437,6 +437,9 @@ message Intent {
 
       // Required. List items.
       repeated Item items = 2;
+
+      // Optional. Subtitle of the list.
+      string subtitle = 3 [(google.api.field_behavior) = OPTIONAL];
     }
 
     // The card for presenting a carousel of options to select from.
@@ -1139,11 +1142,14 @@ message Intent {
   // Optional. Indicates whether webhooks are enabled for the intent.
   WebhookState webhook_state = 6;
 
-  // Optional. The priority of this intent. Higher numbers represent higher
-  // priorities. If this is zero or unspecified, we use the default
-  // priority 500000.
+  // The priority of this intent. Higher numbers represent higher
+  // priorities.
   //
-  // Negative numbers mean that the intent is disabled.
+  // - If the supplied value is unspecified or 0, the service
+  //   translates the value to 500,000, which corresponds to the
+  //   `Normal` priority in the console.
+  // - If the supplied value is negative, the intent is ignored
+  //   in runtime detect intent requests.
   int32 priority = 3;
 
   // Optional. Indicates whether this is a fallback intent.

google/cloud/dialogflow/v2beta1/knowledge_base.proto

@@ -126,7 +126,7 @@ message KnowledgeBase {
   // Language which represents the KnowledgeBase. When the KnowledgeBase is
   // created/updated, this is populated for all non en-us languages. If not
   // populated, the default language en-us applies.
-  string language_code = 3;
+  string language_code = 4;
 }
 
 // Request message for [KnowledgeBases.ListKnowledgeBases][google.cloud.dialogflow.v2beta1.KnowledgeBases.ListKnowledgeBases].