fix: switch trustee chart to git-based ref for dev testing

Trustee chart 0.9.0 not yet published to charts.validatedpatterns.io
(latest is 0.8.0). Switch from chart/chartVersion to repoURL/path
pointing at butler54/trustee-chart dev/osc-1.13-upgrade branch,
same pattern used during Milestone 1 testing (f228913).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: butler54

values-baremetal.yaml

@@ -163,9 +163,9 @@ clusterGroup:
       project: trustee
       annotations:
         argocd.argoproj.io/sync-wave: "20"
-      chart: trustee
-      chartVersion: 0.9.*
+      repoURL: https://github.com/butler54/trustee-chart.git
       targetRevision: dev/osc-1.13-upgrade
+      path: .
       extraValueFiles:
         - '/overrides/values-trustee.yaml'
       overrides: