fix: update trustee chart to use upstream 0.3.3 release

Replace butler54/trustee-chart.git fork reference with upstream
chart reference now that validatedpatterns/trustee-chart#21 has
merged and released as v0.3.3.

The 0.3.3 release includes baremetal TDX/SNP attestation support
and NVIDIA GPU attestation via NRAS remote verifier.

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

Author: butler54

values-baremetal.yaml

@@ -106,9 +106,8 @@ clusterGroup:
       name: trustee
       namespace: trustee-operator-system
       project: trustee
-      repoURL: https://github.com/butler54/trustee-chart.git
-      targetRevision: feature/baremetal-attestation
-      path: .
+      chart: trustee
+      chartVersion: 0.3.*
       overrides:
         - name: global.coco.secured
           value: "true"