feat(helm-chart): update cilium group

| datasource | package                         | from    | to      |
| ---------- | ------------------------------- | ------- | ------- |
| helm       | cilium                          | 1.14.6  | 1.15.0  |
| docker     | quay.io/cilium/cilium           | v1.14.6 | v1.15.1 |
| docker     | quay.io/cilium/operator-generic | v1.14.6 | v1.15.1 |

kubernetes/apps/kube-system/cilium/app/helmrelease.yaml

@@ -14,7 +14,7 @@ spec:
   chart:
     spec:
       chart: cilium
-      version: 1.14.6
+      version: 1.15.0
       sourceRef:
         kind: HelmRepository
         name: cilium-charts

kubernetes/bootstrap/cilium.yaml

@@ -476,7 +476,7 @@ spec:
               topologyKey: kubernetes.io/hostname
       containers:
         - name: cilium-agent
-          image: "quay.io/cilium/cilium:v1.14.6@sha256:37a49f1abb333279a9b802ee8a21c61cde9dd9138b5ac55f77bdfca733ba852a"
+          image: "quay.io/cilium/cilium:v1.15.1@sha256:351d6685dc6f6ffbcd5451043167cfa8842c6decf80d8c8e426a417c73fb56d4"
           imagePullPolicy: IfNotPresent
           command:
             - cilium-agent
@@ -589,7 +589,7 @@ spec:
         # Required to mount cgroup2 filesystem on the underlying Kubernetes node.
         # We use nsenter command with host's cgroup and mount namespaces enabled.
         - name: mount-cgroup
-          image: "quay.io/cilium/cilium:v1.14.6@sha256:37a49f1abb333279a9b802ee8a21c61cde9dd9138b5ac55f77bdfca733ba852a"
+          image: "quay.io/cilium/cilium:v1.15.1@sha256:351d6685dc6f6ffbcd5451043167cfa8842c6decf80d8c8e426a417c73fb56d4"
           imagePullPolicy: IfNotPresent
           env:
             - name: CGROUP_ROOT
@@ -616,7 +616,7 @@ spec:
           securityContext:
             privileged: true
         - name: clean-cilium-state
-          image: "quay.io/cilium/cilium:v1.14.6@sha256:37a49f1abb333279a9b802ee8a21c61cde9dd9138b5ac55f77bdfca733ba852a"
+          image: "quay.io/cilium/cilium:v1.15.1@sha256:351d6685dc6f6ffbcd5451043167cfa8842c6decf80d8c8e426a417c73fb56d4"
           imagePullPolicy: IfNotPresent
           command:
             - /init-container.sh
@@ -760,7 +760,7 @@ spec:
               topologyKey: kubernetes.io/hostname
       containers:
         - name: cilium-operator
-          image: quay.io/cilium/operator-generic:v1.14.6@sha256:2f0bf8fb8362c7379f3bf95036b90ad5b67378ed05cd8eb0410c1afc13423848
+          image: quay.io/cilium/operator-generic:v1.15.1@sha256:819c7281f5a4f25ee1ce2ec4c76b6fbc69a660c68b7825e9580b1813833fa743
           imagePullPolicy: IfNotPresent
           command:
             - cilium-operator-generic