Added milestone applier for k/website

Author: michellengnx

config/prow/plugins.yaml

@@ -596,7 +596,7 @@ milestone_applier:
   kubernetes-sigs/boskos:
     master: v1.23
   kubernetes/website:
-    dev-1.34: 1.34
+    dev-1.35: 1.35
 
 repo_milestone:
   # Default maintainer