chore(longhorn): Fix renovate integration

infrastructure/longhorn/release.yaml

@@ -11,7 +11,7 @@ spec:
       sourceRef:
         kind: HelmRepository
         name: longhorn
-      # renovate: helmRepo=https://charts.longhorn.io depName=longhorn
+        namespace: longhorn-system
       version: 1.2.3
   interval: 5m
   install:

infrastructure/longhorn/repository.yaml

@@ -2,6 +2,7 @@ apiVersion: source.toolkit.fluxcd.io/v1beta1
 kind: HelmRepository
 metadata:
   name: longhorn
+  namespace: longhorn-system
 spec:
   interval: 30m
   url: https://charts.longhorn.io