build: bump openjdk image

Signed-off-by: Ruben Romero Montes <[email protected]>

Author: ruromero

.tekton/openjdk-redis-6gb.yaml

@@ -15,7 +15,7 @@ spec:
   params:
   - name: JDK_IMAGE
     description: Reference of the image buildah will produce.
-    default: registry.redhat.io/ubi9/openjdk-21:1.18
+    default: registry.redhat.io/ubi9/openjdk-21:1.22
   - name: REDIS_IMAGE
     description: The location of the buildah builder image.
     default: docker.io/redis/redis-stack:7.2.0-v7