fix(container): update image mirror.gcr.io/envoyproxy/gateway-helm (1.8.2 ➔ 1.8.3) (#2307)

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

Author: renovate[bot]

template/config/kubernetes/apps/network/envoy-gateway/app/ocirepository.yaml.j2

@@ -9,5 +9,5 @@ spec:
     mediaType: application/vnd.cncf.helm.chart.content.v1.tar+gzip
     operation: copy
   ref:
-    tag: 1.8.2
+    tag: 1.8.3
   url: oci://mirror.gcr.io/envoyproxy/gateway-helm