Release Google.Cloud.BigQuery.DataTransfer.V1 version 4.8.0 (#12603)

Changes in this release:

### Documentation improvements

- Updated comments ([commit b8e05f5](https://togithub.com/googleapis/google-cloud-dotnet/commit/b8e05f5d0128f956984115994083d58a142c78b6))

apis/Google.Cloud.BigQuery.DataTransfer.V1/Google.Cloud.BigQuery.DataTransfer.V1/Google.Cloud.BigQuery.DataTransfer.V1.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <Version>4.7.0</Version>
+    <Version>4.8.0</Version>
     <TargetFrameworks>netstandard2.0;net462</TargetFrameworks>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <Description>Recommended Google client library to access the BigQuery Data Transfer API, which transfers data from partner SaaS applications to Google BigQuery on a scheduled, managed basis.</Description>

apis/Google.Cloud.BigQuery.DataTransfer.V1/docs/history.md

@@ -1,5 +1,11 @@
 # Version history
 
+## Version 4.8.0, released 2024-04-19
+
+### Documentation improvements
+
+- Updated comments ([commit b8e05f5](https://github.com/googleapis/google-cloud-dotnet/commit/b8e05f5d0128f956984115994083d58a142c78b6))
+
 ## Version 4.7.0, released 2024-03-26
 
 ### New features

apis/apis.json

@@ -933,7 +933,7 @@
       "protoPath": "google/cloud/bigquery/datatransfer/v1",
       "productName": "Google BigQuery Data Transfer",
       "productUrl": "https://cloud.google.com/bigquery/transfer/",
-      "version": "4.7.0",
+      "version": "4.8.0",
       "type": "grpc",
       "description": "Recommended Google client library to access the BigQuery Data Transfer API, which transfers data from partner SaaS applications to Google BigQuery on a scheduled, managed basis.",
       "dependencies": {