iat-verifier: update Secure lifecycle claim

Update Secure lifecycle claim based on
https://www.ietf.org/archive/id/draft-tschofenig-rats-psa-token-21.html

Change-Id: Id455ec764ceed0ea21eee6c30aec7ccf4b1ad3c7
Signed-off-by: Mate Toth-Pal <mate.toth-pal@arm.com>
diff --git a/iat-verifier/tests/test_verifier.py b/iat-verifier/tests/test_verifier.py
index 8f64be8..2b7fe92 100644
--- a/iat-verifier/tests/test_verifier.py
+++ b/iat-verifier/tests/test_verifier.py
@@ -1,5 +1,5 @@
 # -----------------------------------------------------------------------------
-# Copyright (c) 2019-2022, Arm Limited. All rights reserved.
+# Copyright (c) 2019-2024, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -252,7 +252,7 @@
             cose_alg=cose_alg,
             signing_key=signing_key,
             configuration=self.config)).get_token_map()
-        self.assertEqual(iat['SECURITY_LIFECYCLE'], 'SL_SECURED')
+        self.assertEqual(iat['SECURITY_LIFECYCLE'], 'sl_secured_3000')
 
     def test_security_lifecycle_decoding(self):
         """Test security lifecycle decoding"""
@@ -266,4 +266,4 @@
             cose_alg=cose_alg,
             signing_key=signing_key,
             configuration=self.config)).get_token_map()
-        self.assertEqual(iat['SECURITY_LIFECYCLE'], 'SL_SECURED')
+        self.assertEqual(iat['SECURITY_LIFECYCLE'], 'sl_secured_3000')