feat(github-release): update fluxcd/flux2 to v2.4.0

| datasource      | package      | from   | to     |
| --------------- | ------------ | ------ | ------ |
| github-releases | fluxcd/flux2 | v2.2.2 | v2.4.0 |
| github-tags     | fluxcd/flux2 | v2.2.2 | v2.4.0 |

cluster/apps/monitoring/grafana/helm-release.yaml

@@ -173,13 +173,13 @@ spec:
     dashboards:
       flux:
         cluster:
-          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.2.2/manifests/monitoring/monitoring-config/dashboards/cluster.json
+          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.4.0/manifests/monitoring/monitoring-config/dashboards/cluster.json
           datasource: Prometheus
         control-plane:
-          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.2.2/manifests/monitoring/monitoring-config/dashboards/control-plane.json
+          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.4.0/manifests/monitoring/monitoring-config/dashboards/control-plane.json
           datasource: Prometheus
         logs:
-          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.2.2/manifests/monitoring/monitoring-config/dashboards/logs.json
+          url: https://raw.githubusercontent.com/fluxcd/flux2/v2.4.0/manifests/monitoring/monitoring-config/dashboards/logs.json
           datasource: Loki
 
       networking:

cluster/flux/repositories/git/flux.yaml

@@ -9,7 +9,7 @@ spec:
   url: https://github.com/fluxcd/flux2.git
   ref:
     # renovate: datasource=github-releases depName=fluxcd/flux2
-    tag: v2.2.2
+    tag: v2.4.0
   ignore: |
     # exclude all
     /*

cluster/kustomization.yaml

@@ -1,6 +1,6 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - github.com/fluxcd/flux2//manifests/install?ref=v2.2.2
+  - github.com/fluxcd/flux2//manifests/install?ref=v2.4.0
   - flux/repositories
   - bootstrap.yaml