Update 4.15 PowerVS Job Cron Timing (#71093)

Author: KeerthanaAP

ci-operator/config/openshift/multiarch/openshift-multiarch-master__nightly-4.15.yaml

@@ -599,7 +599,7 @@ tests:
 - as: ocp-e2e-ovn-ppc64le-powervs-original
   capabilities:
   - sshd-bastion
-  cron: 0 12 * * 1,3
+  cron: 0 0 13 1 *
   steps:
     cluster_profile: powervs-3
     dependencies:

ci-operator/jobs/openshift/multiarch/openshift-multiarch-master-periodics.yaml

@@ -14471,7 +14471,7 @@ periodics:
         secretName: result-aggregator
 - agent: kubernetes
   cluster: build01
-  cron: 0 12 * * 1,3
+  cron: 0 0 13 1 *
   decorate: true
   decoration_config:
     skip_cloning: true