denylist: snooze ext.config.systemd.journal-compat on s390x

This test started failing again but only on 390x. Let's snooze the
test for 2 weeks to not block the pipeline while we investigate the
failure.

see: #85

Author: marmijo

kola-denylist.yaml

@@ -46,3 +46,12 @@
   warn: true
   osversion:
     - rhel-10.1
+
+- pattern: ext.config.systemd.journal-compat
+  tracker: https://github.com/coreos/rhel-coreos-config/issues/85
+  snooze: 2025-12-08
+  warn: true
+  osversion:
+    - rhel-10.1
+  arches:
+    - s390x