feat: [google-cloud-container] add EXTENDED enum value for `Release…

…Channel.Channel` (#13040)

BEGIN_COMMIT_OVERRIDE
feat: add `EXTENDED` enum value for `ReleaseChannel.Channel`
feat: add ReleaseChannel EXTENDED value
END_COMMIT_OVERRIDE

- [ ] Regenerate this pull request now.

PiperOrigin-RevId: 668474656

Source-Link:
googleapis/googleapis@b1a9e6c

Source-Link:
googleapis/googleapis-gen@c0109f3
Copy-Tag:
eyJwIjoicGFja2FnZXMvZ29vZ2xlLWNsb3VkLWNvbnRhaW5lci8uT3dsQm90LnlhbWwiLCJoIjoiYzAxMDlmMzJhMGY5YjljZTMwMDU2NmIzYTdkZDNiMzFiMGM4Y2Y4MiJ9

BEGIN_NESTED_COMMIT
feat: [google-cloud-container] add ReleaseChannel EXTENDED value
PiperOrigin-RevId: 668105133

Source-Link:
googleapis/googleapis@0e9edd7

Source-Link:
googleapis/googleapis-gen@ec9af8f
Copy-Tag:
eyJwIjoicGFja2FnZXMvZ29vZ2xlLWNsb3VkLWNvbnRhaW5lci8uT3dsQm90LnlhbWwiLCJoIjoiZWM5YWY4ZjRmYjEwYzhmODlhMmJjYjM2MzQ1ZmRhMmIzZWYzNjc1ZCJ9
END_NESTED_COMMIT

---------

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>
Co-authored-by: ohmayr <omairnaveed@ymail.com>

packages/google-cloud-container/google/cloud/container_v1/types/cluster_service.py

@@ -8388,11 +8388,17 @@ class Channel(proto.Enum):
                 Clusters subscribed to STABLE receive
                 versions that are known to be stable and
                 reliable in production.
+            EXTENDED (4):
+                Clusters subscribed to EXTENDED receive
+                extended support and availability for versions
+                which are known to be stable and reliable in
+                production.
         """
         UNSPECIFIED = 0
         RAPID = 1
         REGULAR = 2
         STABLE = 3
+        EXTENDED = 4
 
     channel: Channel = proto.Field(
         proto.ENUM,

packages/google-cloud-container/google/cloud/container_v1beta1/types/cluster_service.py

@@ -10166,11 +10166,17 @@ class Channel(proto.Enum):
                 Clusters subscribed to STABLE receive
                 versions that are known to be stable and
                 reliable in production.
+            EXTENDED (4):
+                Clusters subscribed to EXTENDED receive
+                extended support and availability for versions
+                which are known to be stable and reliable in
+                production.
         """
         UNSPECIFIED = 0
         RAPID = 1
         REGULAR = 2
         STABLE = 3
+        EXTENDED = 4
 
     channel: Channel = proto.Field(
         proto.ENUM,