Increase timeout for ci-kubetest2-push-binaries

Author: Rajalakshmi-Girish

config/jobs/image-pushing/k8s-staging-kubetest2.yaml

@@ -41,6 +41,9 @@ periodics:
       testgrid-dashboards: sig-testing-kubetest2, sig-k8s-infra-gcb
       testgrid-alert-email: [email protected]
     decorate: true
+    decoration_config:
+      timeout: 180m
+      grace_period: 10m
     extra_refs:
       - org: kubernetes-sigs
         repo: kubetest2