feat: Automated regeneration of texttospeech v1beta1 client (#24380)

Auto-created at 2025-09-21 10:42:03 +0000 using the toys pull request generator.

Author: yoshi-code-bot

generated/google-apis-texttospeech_v1beta1/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Release history for google-apis-texttospeech_v1beta1
 
+### v0.38.0 (2025-09-21)
+
+* Regenerated from discovery document revision 20250912
+
 ### v0.37.0 (2025-09-07)
 
 * Regenerated from discovery document revision 20250903

generated/google-apis-texttospeech_v1beta1/lib/google/apis/texttospeech_v1beta1/classes.rb

@@ -408,9 +408,10 @@ class SynthesisInput
         # @return [Google::Apis::TexttospeechV1beta1::MultiSpeakerMarkup]
         attr_accessor :multi_speaker_markup
 
-        # This is system instruction supported only for controllable voice models. If
-        # used, we will pass text to Flash TTS as is. Can only used with Flash TTS. What
-        # AI Studio calls Style Instructions.
+        # This system instruction is supported only for controllable/promptable voice
+        # models. If this system instruction is used, we pass the unedited text to
+        # Gemini-TTS. Otherwise, a default system instruction is used. AI Studio calls
+        # this system instruction, Style Instructions.
         # Corresponds to the JSON property `prompt`
         # @return [String]
         attr_accessor :prompt

generated/google-apis-texttospeech_v1beta1/lib/google/apis/texttospeech_v1beta1/gem_version.rb

@@ -16,13 +16,13 @@ module Google
   module Apis
     module TexttospeechV1beta1
       # Version of the google-apis-texttospeech_v1beta1 gem
-      GEM_VERSION = "0.37.0"
+      GEM_VERSION = "0.38.0"
 
       # Version of the code generator used to generate this client
       GENERATOR_VERSION = "0.18.0"
 
       # Revision of the discovery document this client was generated from
-      REVISION = "20250903"
+      REVISION = "20250912"
     end
   end
 end