fix(rpm-updates): unit-test

Author: markuslf

check-plugins/rpm-updates/unit-test/containerfiles/rhel-v9

@@ -37,20 +37,8 @@ TESTS = [
             {
                 'run-where': 'container',
                 'plugin-params': '',
-                'assert-regex': r'\d+ updates available',
-                'assert-retc': 1,
-            },
-        ],
-    },
-    {
-        'containerfile': 'containerfiles/rhel-v9',
-        'podman-run-params': '',
-        'tests': [
-            {
-                'run-where': 'container',
-                'plugin-params': '',
-                'assert-regex': r'\d+ updates available',
-                'assert-retc': 1,
+                'assert-regex': r'No updates available',
+                'assert-retc': 0,
             },
         ],
     },