Extend rpm-ostree.kernel-replace test snooze dates

Author: prestist

kola-denylist.yaml

@@ -10,7 +10,7 @@
 
 - pattern: ext.config.rpm-ostree.kernel-replace
   tracker: https://github.com/coreos/fedora-coreos-tracker/issues/2115
-  snooze: 2026-04-13
+  snooze: 2026-05-21
   warn: true
   arches:
     - ppc64le
@@ -19,7 +19,7 @@
 
 - pattern: ext.config.rpm-ostree.kernel-replace
   tracker: https://github.com/coreos/fedora-coreos-tracker/issues/2124
-  snooze: 2026-04-13
+  snooze: 2026-05-21
   warn: true
   arches:
     - aarch64
@@ -28,7 +28,7 @@
 
 - pattern: fcos.upgrade.basic
   tracker: https://github.com/coreos/fedora-coreos-tracker/issues/2129
-  snooze: 2026-04-13
+  snooze: 2026-05-21
   warn: true
   arches:
     - ppc64le