Update Helm release keycloak to v21.4.4

Author: renovate[bot]

fleet/lib/keycloak/fleet.yaml

@@ -8,7 +8,7 @@ helm:
   chart: *name
   releaseName: *name
   repo: https://charts.bitnami.com/bitnami
-  version: 21.4.1
+  version: 21.4.4
   waitForJobs: true
   valuesFiles:
     - values.yaml