fix(container): update envoyproxy-gateway group

| datasource | package                               | from   | to     |
| ---------- | ------------------------------------- | ------ | ------ |
| docker     | docker.io/envoyproxy/gateway-helm     | 1.8.1  | 1.8.2  |
| docker     | mirror.gcr.io/envoyproxy/gateway-helm | v1.8.1 | v1.8.2 |

Author: renovate[bot]

kubernetes/core/envoy-gateway/source.yml

@@ -10,5 +10,5 @@ spec:
     mediaType: application/vnd.cncf.helm.chart.content.v1.tar+gzip
     operation: copy
   ref:
-    tag: v1.8.1
+    tag: v1.8.2
   url: oci://mirror.gcr.io/envoyproxy/gateway-helm

kubernetes/hacks/helmfile.d/crds.yml

@@ -16,7 +16,7 @@ releases:
   - name: envoy-gateway
     namespace: network
     chart: oci://docker.io/envoyproxy/gateway-helm
-    version: 1.8.1
+    version: 1.8.2
   - name: external-dns
     namespace: network
     chart: oci://ghcr.io/home-operations/charts-mirror/external-dns