chore: Release library Google.Cloud.Dialogflow.V2Beta1 version 1.0.0-beta28

### New features

- Added a new field StreamingAnalyzeContentRequest.output_multiple_utterances

Librarian-Release-Library: Google.Cloud.Dialogflow.V2Beta1
Librarian-Release-Version: 1.0.0-beta28
Librarian-Release-ID: release-20260202T140248Z

Author: google-cloud-sdk-librarian-dotnet-robot

apis/Google.Cloud.Dialogflow.V2Beta1/Google.Cloud.Dialogflow.V2Beta1/Google.Cloud.Dialogflow.V2Beta1.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>1.0.0-beta27</Version>
+    <Version>1.0.0-beta28</Version>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Description>Recommended Google client library to access the Google Dialogflow API (v2beta1).</Description>

apis/Google.Cloud.Dialogflow.V2Beta1/docs/history.md

@@ -1,5 +1,11 @@
 # Version history
 
+## Version 1.0.0-beta28, released 2026-02-02
+
+### New features
+
+- Added a new field StreamingAnalyzeContentRequest.output_multiple_utterances
+
 ## Version 1.0.0-beta27, released 2025-12-15
 
 ### New features

generator-input/apis.json

@@ -2460,7 +2460,7 @@
     },
     {
       "id": "Google.Cloud.Dialogflow.V2Beta1",
-      "version": "1.0.0-beta27",
+      "version": "1.0.0-beta28",
       "type": "grpc",
       "productName": "Google Cloud Dialogflow",
       "productUrl": "https://cloud.google.com/dialogflow-enterprise/",

generator-input/pipeline-state.json

@@ -1413,12 +1413,12 @@
         },
         {
             "id": "Google.Cloud.Dialogflow.V2Beta1",
-            "currentVersion": "1.0.0-beta27",
+            "currentVersion": "1.0.0-beta28",
             "generationAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
             "releaseAutomationLevel": "AUTOMATION_LEVEL_AUTOMATIC",
-            "releaseTimestamp": "2025-12-15T14:06:39.693694453Z",
+            "releaseTimestamp": "2026-02-02T14:12:40.658558009Z",
             "lastGeneratedCommit": "fa4dc54cf123a351f3215b384a7dc7c9f36005b7",
-            "lastReleasedCommit": "55ab9c6263bafb0ef1aa2d8722d190c1697bcbcb",
+            "lastReleasedCommit": "fa4dc54cf123a351f3215b384a7dc7c9f36005b7",
             "apiPaths": [
                 "google/cloud/dialogflow/v2beta1"
             ],