Merge branch 'renovate-update' into 'main'

Update renovate.json

See merge request !176

renovate.json

@@ -2,7 +2,6 @@
   "baseBranches": ["main"],
   "configWarningReuseIssue": false,
   "dependencyDashboard": "true",
-  "dependencyDashboardHeader": "- [ ] Sync upstream helm chart version with updated dependencies.",
   "dependencyDashboardTitle": "Renovate: Upgrade Istio Operator Package Dependencies",
   "draftPR": true,
   "labels": ["istio","Big Bang Core","Package Sustainment","kind::maintenance"],