Fix immich to track main branch instead of feature/immich

The immich app was still pointing to the feature/immich branch for its
values, causing it to show as OutOfSync with older image versions.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

argocd/apps/immich.yaml

@@ -28,7 +28,7 @@ spec:
           - $values/argocd/manifests/immich/values.yaml
     # Values from our git repo (use feature branch for testing, reset to main after merge)
     - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/blumeops.git
-      targetRevision: feature/immich
+      targetRevision: main
       ref: values
   destination:
     server: https://kubernetes.default.svc