chore(main): release google-cloud-config_service-v1 2.9.0

Author: release-please[bot]

.release-please-manifest.json

@@ -253,7 +253,7 @@
   "google-cloud-config_delivery-v1+FILLER": "0.0.0",
   "google-cloud-config_service": "2.1.0",
   "google-cloud-config_service+FILLER": "0.0.0",
-  "google-cloud-config_service-v1": "2.8.0",
+  "google-cloud-config_service-v1": "2.9.0",
   "google-cloud-config_service-v1+FILLER": "0.0.0",
   "google-cloud-connectors": "2.1.0",
   "google-cloud-connectors+FILLER": "0.0.0",

google-cloud-config_service-v1/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+### 2.9.0 (2026-04-14)
+
+#### Features
+
+* adding DeploymentGroups, you can now manage deployment of multiple module root dependencies in a single DAG ([#33816](https://github.com/googleapis/google-cloud-ruby/issues/33816)) 
+
 ### 2.8.0 (2026-04-02)
 
 #### Features

google-cloud-config_service-v1/lib/google/cloud/config_service/v1/version.rb

@@ -21,7 +21,7 @@ module Google
   module Cloud
     module ConfigService
       module V1
-        VERSION = "2.8.0"
+        VERSION = "2.9.0"
       end
     end
   end