feat: add ReleaseChannel EXTENDED value

Google APIs · copybara-github · commit 0e9edd761704 · 2024-08-27T13:01:31.000-07:00
PiperOrigin-RevId: 668105133
diff --git a/google/container/v1/cluster_service.proto b/google/container/v1/cluster_service.proto
@@ -4752,6 +4752,10 @@ message ReleaseChannel {
     // Clusters subscribed to STABLE receive versions that are known to be
     // stable and reliable in production.
     STABLE = 3;
+
+    // Clusters subscribed to EXTENDED receive extended support and availability
+    // for versions which are known to be stable and reliable in production.
+    EXTENDED = 4;
   }
 
   // channel specifies which release channel the cluster is subscribed to.
