Merge pull request #487 from GlueOps/renovate/vault-0.28.x

chore(deps): update helm release vault to v0.28.1

Author: hamzabouissi

templates/application-vault.yaml

@@ -29,7 +29,7 @@ spec:
   source:
     repoURL: 'https://helm.releases.hashicorp.com'
     chart: vault
-    targetRevision: 0.25.0
+    targetRevision: 0.28.1
     helm:
       values: |-
         # Vault Helm Chart Value Overrides