chore(main): release google-cloud-speech-v2 1.5.0 (#32361)

* chore(main): release google-cloud-speech-v2 1.5.0

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: release-please[bot]

.release-please-manifest.json

@@ -781,7 +781,7 @@
   "google-cloud-speech-v1+FILLER": "0.0.0",
   "google-cloud-speech-v1p1beta1": "0.27.1",
   "google-cloud-speech-v1p1beta1+FILLER": "0.0.0",
-  "google-cloud-speech-v2": "1.4.1",
+  "google-cloud-speech-v2": "1.5.0",
   "google-cloud-speech-v2+FILLER": "0.0.0",
   "google-cloud-storage": "1.58.0",
   "google-cloud-storage+FILLER": "0.0.0",

google-cloud-speech-v2/CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+### 1.5.0 (2026-01-13)
+
+#### Features
+
+* add custom prompt config in the request and return prompt in the response ([#32325](https://github.com/googleapis/google-cloud-ruby/issues/32325)) 
+* update min_speaker_count and max_speaker_count to be optional 
+
 ### 1.4.1 (2025-10-27)
 
 #### Documentation

google-cloud-speech-v2/lib/google/cloud/speech/v2/version.rb

@@ -21,7 +21,7 @@ module Google
   module Cloud
     module Speech
       module V2
-        VERSION = "1.4.1"
+        VERSION = "1.5.0"
       end
     end
   end

google-cloud-speech-v2/snippets/snippet_metadata_google.cloud.speech.v2.json

@@ -1,7 +1,7 @@
 {
   "client_library": {
     "name": "google-cloud-speech-v2",
-    "version": "1.4.1",
+    "version": "1.5.0",
     "language": "RUBY",
     "apis": [
       {