update pull-publishing-bot-validate to use go1.25

Signed-off-by: Carlos Panato <[email protected]>

Author: cpanato

config/jobs/kubernetes/publishing-bot/publishing-bot-presubmits.yaml

@@ -158,7 +158,7 @@ presubmits:
       path_alias: k8s.io/publishing-bot
     spec:
       containers:
-      - image: public.ecr.aws/docker/library/golang:1.24
+      - image: public.ecr.aws/docker/library/golang:1.25
         env:
         - name: "GOWORK"
           value: "off"