add missing cuda 12.9 ray-extra (#59495)

aslonnie · web-flow · commit 3332314b258b · 2025-12-16T18:59:25.000-08:00
cherrypick #59494 Signed-off-by: Lonnie Liu <lonnie@anyscale.com>
diff --git a/.buildkite/build.rayci.yml b/.buildkite/build.rayci.yml
@@ -101,6 +101,7 @@ steps:
         --platform cu12.1.1-cudnn8 --platform cu12.3.2-cudnn9
         --platform cu12.4.1-cudnn --platform cu12.5.1-cudnn
         --platform cu12.6.3-cudnn --platform cu12.8.1-cudnn
+        --platform cu12.9.1-cudnn
         --platform cpu
         --image-type ray-extra --upload
     depends_on:
