Create banner for KubeCon China (#6936)

Signed-off-by: tiffany76 <[email protected]>
Co-authored-by: Patrice Chalin <[email protected]>

Author: tiffany76

content/en/announcements/kubecon-china.md

@@ -0,0 +1,14 @@
+---
+title: KubeCon + CloudNativeCon China 2025
+linkTitle: KubeCon China 2025
+date: 2025-05-20
+expiryDate: 2025-06-11
+---
+
+<i class="fas fa-bullhorn"></i> [**{{% param title %}}**][LF],
+**<span class="text-nowrap">June 10 - 11,</span> Hong Kong**
+<span class="d-none d-md-inline"><br></span> Come collaborate, learn, and
+share<span class="d-none d-sm-inline"> with the Cloud Native community</span>!
+
+[LF]:
+  https://events.linuxfoundation.org/kubecon-cloudnativecon-china/reg/register/?utm_source=opentelemetry&utm_medium=all&utm_campaign=KubeCon-China-2025&utm_content=slim-banner

static/refcache.json

@@ -2199,6 +2199,10 @@
     "StatusCode": 200,
     "LastSeen": "2025-02-06T02:07:12.345Z"
   },
+  "https://events.linuxfoundation.org/kubecon-cloudnativecon-china/reg/register/": {
+    "StatusCode": 206,
+    "LastSeen": "2025-05-20T15:52:00.266656976-07:00"
+  },
   "https://events.linuxfoundation.org/kubecon-cloudnativecon-europe/": {
     "StatusCode": 200,
     "LastSeen": "2025-01-15T11:26:04.94478-05:00"