Goal:

Update OSSM to Istio 1.27 and Envoy 1.35.

Acceptance Criteria:

• All OSSM components (Sail-operator, Istio, Envoy, Kiali, Docs, QE) are updated to support the new version of Istio
• All unit and integration tests pass on all platforms.
• Release notes to note any new features that will not be GA in OSSM (Specify text in the release notes field)
• Feature support table is updated to reflect any changes in support status
• Issues are created for any new features that require:
  • Additional QE tests (upstream or downstream)
  • Additional documentation (beyond release notes or feature support)

Open questions:

• Will need to also somehow track the ztunnel rebase.
• Changes will be required for Konflux.