test: Bump vector-aggregator to 0.55.0

Author: NickLarsenNZ

tests/templates/kuttl/logging/01-install-opa-vector-aggregator.yaml

@@ -5,7 +5,7 @@ commands:
   - script: >-
       helm install opa-vector-aggregator vector
       --namespace $NAMESPACE
-      --version 0.49.0
+      --version 0.52.0 `# app version 0.55.0`
       --repo https://helm.vector.dev
       --values opa-vector-aggregator-values.yaml
 ---