tests/e2e: use StreamWithContext instead of Stream

golangci reported:
 tests/e2e/helpers/exec.go:49:9 staticcheck  SA1019: exec.Stream is
 deprecated: use StreamWithContext instead to avoid possible resource
 leaks. See kubernetes/kubernetes#103177 for
 details.

Signed-off-by: Kornilios Kourtis <kornilios@isovalent.com>

tests/e2e/helpers/exec.go

@@ -46,7 +46,7 @@ func ExecInPod(ctx context.Context, client klient.Client, namespace, pod, contai
 		return fmt.Errorf("error while creating executor: %w", err)
 	}
 
-	return exec.Stream(remotecommand.StreamOptions{
+	return exec.StreamWithContext(ctx, remotecommand.StreamOptions{
 		Stdout: stdout,
 		Stderr: stderr,
 	})