Announcing Istio 1.21.5

This release note describes what is different between Istio 1.21.4 and 1.21.5.

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Changes

• Updated Go version to include security fixes for the net/http package related to CVE-2024-24791

• Updated Envoy version to include security fixes related to CVE-2024-39305

• Fixed a bug where router's merged gateway was not immediately recomputed when a service was created or updated. (Issue #51726)