Add 1.20.2 releasenotes (#14438)

* Add 1.20.2 releasenotes

* Add 1.20.2 releasenotes

* fix lint

* Update content/en/news/releases/1.20.x/announcing-1.20.2/index.md

Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>

* Update content/en/news/releases/1.20.x/announcing-1.20.2/index.md

---------

Co-authored-by: Wilson Wu <iwilsonwu@gmail.com>
Co-authored-by: Eric Van Norman <ericvn@us.ibm.com>

content/en/news/releases/1.20.x/announcing-1.20.2/index.md

@@ -0,0 +1,45 @@
+---
+title: Announcing Istio 1.20.2
+linktitle: 1.20.2
+subtitle: Patch Release
+description: Istio 1.20.2 patch release.
+publishdate: 2024-01-09
+release: 1.20.2
+---
+
+This release note describes what’s different between Istio 1.20.1 and 1.20.2.
+
+{{< relnote >}}
+
+## Changes
+
+- **Added** configurable scaling behavior for Gateway `HorizontalPodAutoscaler` in the helm chart.
+  ([usage]( https://kubernetes.io/docs/tasks/run-application/horizontal-pod-autoscale/#configurable-scaling-behavior))
+
+- **Fixed** a bug where overlapping wildcard hosts in a `VirtualService` produces incorrect routing configurations
+  when wildcard services were selected (e.g. in `ServiceEntry`).
+  ([Issue #45415](https://github.com/istio/istio/issues/45415))
+
+- **Fixed** an issue where Istio was performing additional XDS pushes for `StatefulSets` and headless `Service`
+  endpoints while scaling.
+  ([Issue #48207](https://github.com/istio/istio/issues/48207))
+
+- **Fixed** an issue where the Istio injection webhook may be modified in dry-run mode.
+  ([Issue #48241](https://github.com/istio/istio/issues/48241))
+
+- **Fixed** an issue if `DestinationRule`'s `exportTo` includes workload's current namespace (not '.'), other namespaces
+  are ignored from `exportTo`.
+  ([Issue #48349](https://github.com/istio/istio/issues/48349))
+
+- **Fixed** an issue where the QUIC listeners were not correctly created when dual-stack is enabled.
+  ([Issue #48336](https://github.com/istio/istio/issues/48336))
+
+- **Fixed** an issue where `istioctl proxy-config ecds` didn't display all `EcdsConfigDump`.
+
+- **Fixed** an issue where new endpoints may not be sent to proxies.
+  ([Issue #48373](https://github.com/istio/istio/issues/48373))
+
+- **Fixed** an issue where installing with Stackdriver and using custom configurations would prevent Stackdriver from
+  being enabled.
+
+- **Fixed** an issue where long-lived connections, TCP bytes and gRPC, could result in a proxy memory leak.