keycloak-legacy-operator definition is not using specific tags

In the kustomization.yaml of keycloak-legacy-operator unit the external resources are targeting the main branch instead of using a tag.

https://gitlab.com/sylva-projects/sylva-core/-/blob/main/kustomize-units/keycloak-legacy-operator/kustomization.yaml

Available tag ( 1.0.0) : https://github.com/keycloak/keycloak-realm-operator/tree/1.0.0