chore(deps): update dependency google.cloud.bigquery.storage.v1 to v2.8.0

Author: renovate-bot

bigquery-storage/api/BigQueryStorage.Samples/BigQueryStorage.Samples.csproj

@@ -4,6 +4,6 @@
     <IsPackable>false</IsPackable>
   </PropertyGroup> 
   <ItemGroup>
-    <PackageReference Include="Google.Cloud.BigQuery.Storage.V1" Version="2.7.0" />  
+    <PackageReference Include="Google.Cloud.BigQuery.Storage.V1" Version="2.8.0" />  
   </ItemGroup> 
 </Project>