CDRO-13616 - [POST-RELEASE] Update CB helm CDRO examples configuration files v2026.03

  This commit updates the image tags from version 2025.09.0.181816_3.2.191_20250916 to 2026.03.0.185227_3.2.235_20260321 in:
  - cloudbees-cd/kubernetes/cloudbees-cd-agent-defaults.yaml
  - cloudbees-cd/kubernetes/cloudbees-cd-defaults.yaml (including zookeeper image tag)

Author: Muxamedin

cloudbees-cd/kubernetes/cloudbees-cd-agent-defaults.yaml

@@ -9,7 +9,7 @@ images:
   ## The `imageRepository` in the `images.registry` to pull the agent image from.
   imageRepository: "cbflow-agent"
   ## CloudBees CD/RO flow-server image tag to pull.
-  tag: "2025.09.0.181816_3.2.191_20250916"
+  tag: "2026.03.0.185227_3.2.235_20260321"
 
   ## The image pull policy to use:
   pullPolicy: IfNotPresent

cloudbees-cd/kubernetes/cloudbees-cd-defaults.yaml

@@ -24,7 +24,7 @@ images:
   registry: "docker.io/cloudbees"
 
   ## CloudBees CD/RO flow-server image tag to pull.
-  tag: "2025.09.0.181816_3.2.191_20250916"
+  tag: "2026.03.0.185227_3.2.235_20260321"
 
   ## The image pull policy to use.
   pullPolicy: IfNotPresent
@@ -1307,7 +1307,7 @@ zookeeper:
     ## Container repository to pull ZooKeeper image from.
     repository: docker.io/cloudbees/cbflow-tools
     ## Zookeeper image tag to pull.
-    tag: "2025.09.0.181816_3.2.191_20250916"
+    tag: "2026.03.0.185227_3.2.235_20260321"
     ## Added Image repository for global values support
     imageRepository: cbflow-tools
   fullnameOverride: zookeeper