Merge pull request #35617 from mimowo/kueue-add-milestone

Kueue: add 0.15 milestone

Author: k8s-ci-robot

config/prow/plugins.yaml

@@ -515,7 +515,8 @@ milestone_applier:
     main: v0.2
     release-0.1: v0.1
   kubernetes-sigs/kueue:
-    main: v0.14
+    main: v0.15
+    release-0.14: v0.14
     release-0.13: v0.13
     release-0.12: v0.12
     release-0.11: v0.11