chore(deps): update fluxcd (#1630)

Author: renovate[bot]

.github/workflows/flux-diff.yml

@@ -18,7 +18,7 @@ jobs:
         resource: ["helmrelease", "kustomization"]
     steps:
       - name: Setup Flux CLI
-        uses: fluxcd/flux2/action@54e4ba378e155ada619caafdc599e5c4d759ce5c # v2.8.7
+        uses: fluxcd/flux2/action@1fd61a06264d71cf445ed55c4f14d401d26a1c64 # v2.8.8
 
       - name: Diff Resources
         uses: allenporter/flux-local/action/diff@4d666add25002f550dc0dbe8b2b2f25859169b34 # 8.2.0

.mise/config.toml

@@ -1,6 +1,6 @@
 [tools]
 deno = "2.8.3"
-flux2 = "2.8.7"
+flux2 = "2.8.8"
 go = "1.26.3"
 "go:github.com/cloudnative-pg/cloudnative-pg/cmd/kubectl-cnpg" = "1.29.1"
 helm = "4.2.0"

kubernetes/bootstrap/kustomization.yaml

@@ -2,7 +2,7 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  - github.com/fluxcd/flux2/manifests/install?ref=v2.8.7
+  - github.com/fluxcd/flux2/manifests/install?ref=v2.8.8
 patches:
   - patch: |-
       $patch: delete

kubernetes/flux/config/flux.yaml

@@ -8,7 +8,7 @@ spec:
   interval: 10m
   url: oci://ghcr.io/fluxcd/flux-manifests
   ref:
-    digest: sha256:c1e1c1bbfbd90082ccaad5105334e0a26c4eccd37248ad20e1511004ebab50e3
+    digest: sha256:64e1ca89a2ac594c4d2d75717084b57f349dadde6eee9b0872b0b1d02561a233
 ---
 apiVersion: kustomize.toolkit.fluxcd.io/v1
 kind: Kustomization