Goal:

Update OSSM to Istio 1.26.

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:

• Should we update the BoringSSL compatibility layer to OpenSSL 3.2?
• Should we update repos to track main and then branch when 1.26 is released?