fix(deps): update fluxcd dependencies

Author: renovate[bot]

go.mod

@@ -6,8 +6,8 @@ require (
 	github.com/crossplane-contrib/xp-testing v1.5.0
 	github.com/crossplane/crossplane v1.20.0
 	github.com/fluxcd/helm-controller/api v1.3.0
-	github.com/fluxcd/kustomize-controller/api v1.6.0
-	github.com/fluxcd/pkg/apis/meta v1.13.0
+	github.com/fluxcd/kustomize-controller/api v1.6.1
+	github.com/fluxcd/pkg/apis/meta v1.20.0
 	github.com/fluxcd/source-controller/api v1.6.2
 	github.com/go-logr/logr v1.4.3
 	github.com/openmcp-project/controller-utils v0.11.0