chore(deps): update gateway-helm docker tag to v1.5.4

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gitops/argocd/charts/gateway-api/envoy-gateway/Chart.yaml

@@ -10,4 +10,4 @@ appVersion: 1.0.0
 dependencies:
 - name: gateway-helm
   repository: oci://docker.io/envoyproxy
-  version: 1.5.0
+  version: 1.5.4