test: extend ListProbesname timeout

Extend the timeout on this test to give more breathing room to
slower systems running more recent kernels with more probes.

Signed-off-by: Eugene Loh <eugene.loh@oracle.com>
Reviewed-by: Kris Van Hees <kris.van.hees@oracle.com>

test/unittest/dtrace-util/tst.ListProbesName.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 #
 # Oracle Linux DTrace.
-# Copyright (c) 2013, 2021, Oracle and/or its affiliates. All rights reserved.
+# Copyright (c) 2013, 2023, Oracle and/or its affiliates. All rights reserved.
 # Licensed under the Universal Permissive License v 1.0 as shown at
 # http://oss.oracle.com/licenses/upl.
 #
 
-# @@timeout: 20
+# @@timeout: 90
 
 ##
 #