fix(chart): declare spec.conversion in CRD to match API server default

API server defaults spec.conversion to {strategy: None} on the live CRD;
the static manifest omitted it, causing ArgoCD to report the CRD
permanently OutOfSync (extra field in live, absent in desired).
Declaring it explicitly aligns desired with live.

Author: MicheleCampi

chart/crds/crd.yaml

@@ -6,6 +6,8 @@ metadata:
     argocd.argoproj.io/sync-options: Prune=false
   name: vllmservices.inference.michelecampi.dev
 spec:
+  conversion:
+    strategy: None
   group: inference.michelecampi.dev
   names:
     categories: []