feat(helm): update chart k8s-gateway to 2.4.0

[renovate]

This PR contains the following updates:

Package	Update	Change
k8s-gateway	minor	2.1.0 -> 2.4.0

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[github-actions]

--- kubernetes/apps/network/k8s-gateway/app Kustomization: flux-system/k8s-gateway HelmRelease: network/k8s-gateway

+++ kubernetes/apps/network/k8s-gateway/app Kustomization: flux-system/k8s-gateway HelmRelease: network/k8s-gateway

@@ -13,13 +13,13 @@

     spec:
       chart: k8s-gateway
       sourceRef:
         kind: HelmRepository
         name: k8s-gateway
         namespace: flux-system
-      version: 2.1.0
+      version: 2.4.0
   install:
     remediation:
       retries: 3
   interval: 30m
   maxHistory: 2
   uninstall:

[github-actions]

--- HelmRelease: network/k8s-gateway Deployment: network/k8s-gateway

+++ HelmRelease: network/k8s-gateway Deployment: network/k8s-gateway

@@ -15,12 +15,13 @@

       app.kubernetes.io/instance: k8s-gateway
   template:
     metadata:
       labels:
         app.kubernetes.io/name: k8s-gateway
         app.kubernetes.io/instance: k8s-gateway
+        app.kubernetes.io/managed-by: Helm
     spec:
       serviceAccountName: k8s-gateway
       containers:
       - name: k8s-gateway
         image: quay.io/oriedge/k8s_gateway:v0.4.0
         imagePullPolicy: IfNotPresent