Add release metadata config (#11747)

* Add release metadat config

* Move the release metadata config to the correct event workflow

.release/ci.hcl

@@ -175,6 +175,7 @@ event "promote-staging" {
     organization = "hashicorp"
     repository = "crt-workflows-common"
     workflow = "promote-staging"
+    config = "release-metadata.hcl"
   }
 
   notification {
@@ -237,4 +238,4 @@ event "promote-production-packaging" {
   notification {
     on = "always"
   }
-}
+}