chore(deps): update tool sigs.k8s.io/kustomize/kustomize/v5 to v5.6.0 (#3609)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Makefile

@@ -492,7 +492,7 @@ GOLANGCI_LINT ?= $(LOCALBIN)/golangci-lint
 CHAINSAW ?= $(LOCALBIN)/chainsaw
 
 # renovate: datasource=go depName=sigs.k8s.io/kustomize/kustomize/v5
-KUSTOMIZE_VERSION ?= v5.5.0
+KUSTOMIZE_VERSION ?= v5.6.0
 # renovate: datasource=go depName=sigs.k8s.io/controller-tools/cmd/controller-gen
 CONTROLLER_TOOLS_VERSION ?= v0.17.1
 # renovate: datasource=go depName=github.com/golangci/golangci-lint/cmd/golangci-lint