[zh] Sync files in /events/banners/ (#15385)

content/zh/events/banners/announcing-ambient-mesh.md

@@ -0,0 +1,9 @@
+---
+title: Ambient Mesh 公告
+period_start: 2022-09-08
+period_end: 2022-09-22
+max_impressions: 12
+---
+
+了解 [Ambient 网格](/zh/blog/2022/introducing-ambient-mesh/)：
+Istio 全新的数据平面模式，不带 Sidecar。

content/zh/events/banners/istio-graduates-within-cncf.md

@@ -0,0 +1,8 @@
+---
+title: Istio 已从 CNCF 毕业
+period_start: 2023-07-14
+period_end: 2023-07-19
+max_impressions: 12
+---
+
+Istio 已从 CNCF 毕业！[阅读更多](/zh/blog/2023/istio-graduates-within-cncf/)。

content/zh/events/banners/kubernetes-1.22-with-older-releases.md

@@ -1,9 +0,0 @@
----
-title: Kubernetes 1.22 发布声明
-period_start: 2021-08-04
-period_duration: 180
-max_impressions: 8
-timeout: 120
-link: /zh/docs/releases/supported-releases#support-status-of-istio-releases
----
-Kubernetes 1.22 仅适用于 Istio 1.10 及更高版本。单击此处查看支持的版本列表。