fix up sample ingest test case

KodrAus · KodrAus · commit ce981e85e0dd · 2025-05-14T10:33:45.000+10:00
diff --git a/test/SeqCli.EndToEnd/Sample/SampleIngestTestCase.cs b/test/SeqCli.EndToEnd/Sample/SampleIngestTestCase.cs
@@ -1,3 +1,4 @@
+using System;
 using System.Linq;
 using System.Threading.Tasks;
 using Seq.Api;

Original file line number	Diff line number	Diff line change
`@@ -1,3 +1,4 @@`
	`1`	`+using System;`
`1`	`2`	`using System.Linq;`
`2`	`3`	`using System.Threading.Tasks;`
`3`	`4`	`using Seq.Api;`