chore(deps): update container image ghcr.io/fluxcd/helm-controller to v0.21.0

Signed-off-by: Nicholas Wilde <ncwilde43@gmail.com>

Author: renovate-bot

cluster/base/flux-system/gotk-components.yaml

@@ -2459,7 +2459,7 @@ spec:
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace
-        image: ghcr.io/fluxcd/helm-controller:v0.11.2
+        image: ghcr.io/fluxcd/helm-controller:v0.21.0
         imagePullPolicy: IfNotPresent
         livenessProbe:
           httpGet: