chore: use oci repo for immich helm chart (#1777)

kubernetes/apps/preview/demo/deployment/hr.yaml

@@ -5,16 +5,10 @@ metadata:
   namespace: preview
 spec:
   interval: 5m
-  chart:
-    spec:
-      chart: immich
-      # renovate: datasource=github-releases depName=immich-app/immich-charts
-      version: "0.10.3"
-      sourceRef:
-        kind: HelmRepository
-        name: immich-charts
-        namespace: flux-system
-      interval: 1m
+  chartRef:
+    kind: OCIRepository
+    name: immich-charts
+    namespace: flux-system
   values:
     valkey:
       enabled: true

kubernetes/apps/preview/github-previews/app/resource-set.yaml

@@ -83,16 +83,10 @@ spec:
         disableWait: true
       upgrade:
         disableWait: true
-      chart:
-        spec:
-          chart: immich
-          # renovate: datasource=github-releases depName=immich-app/immich-charts
-          version: "0.10.3"
-          sourceRef:
-            kind: HelmRepository
-            name: immich-charts
-            namespace: flux-system
-          interval: 1m
+      chartRef:
+        kind: OCIRepository
+        name: immich-charts
+        namespace: flux-system
       values:
         postgres:
           enabled: false

kubernetes/flux/repositories/helm/immich-charts.yaml

@@ -1,8 +1,10 @@
 apiVersion: source.toolkit.fluxcd.io/v1
-kind: HelmRepository
+kind: OCIRepository
 metadata:
   name: immich-charts
   namespace: flux-system
 spec:
   interval: 1h
-  url: https://immich-app.github.io/immich-charts
+  url: oci://ghcr.io/immich-app/immich-charts/immich
+  ref:
+    tag: "0.12.1"