feat: Automated regeneration of Firebase client (googleapis#13215)

Auto-created at 2025-03-25 13:13:04 +0000 using the toys pull request generator.

Author: yoshi-code-bot

clients/firebase/lib/google_api/firebase/v1beta1/metadata.ex

@@ -20,7 +20,7 @@ defmodule GoogleApi.Firebase.V1beta1 do
   API client metadata for GoogleApi.Firebase.V1beta1.
   """
 
-  @discovery_revision "20250319"
+  @discovery_revision "20250321"
 
   def discovery_revision(), do: @discovery_revision
 end

clients/firebase/lib/google_api/firebase/v1beta1/model/message_set.ex

@@ -17,7 +17,7 @@
 
 defmodule GoogleApi.Firebase.V1beta1.Model.MessageSet do
   @moduledoc """
-  LINT.ThenChange( //depot/google3/third_party/protobuf/github/src/google/protobuf/bridge/message_set.proto ) This is proto2's version of MessageSet.
+  This is proto2's version of MessageSet.
 
   ## Attributes