chore(deps): update dependency google.cloud.storagetransfer.v1 to 2.8.0

Author: renovate-bot

storagetransfer/api/StorageTransfer.Samples/StorageTransfer.Samples.csproj

@@ -5,6 +5,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Cloud.StorageTransfer.V1" Version="2.7.0" />
+    <PackageReference Include="Google.Cloud.StorageTransfer.V1" Version="2.8.0" />
   </ItemGroup>
 </Project>