chore(main): release 4.0.0 (#28)

🤖 I have created a release *beep* *boop*
---


##
[4.0.0](3.0.1...4.0.0)
(2026-08-18)


### ⚠ BREAKING CHANGES

* the default API version is now 2026-09-13.

### Features

* regenerate SDK for API 2026-09-13 with consent-challenge voice cloning
([#27](#27))
([f3f323d](f3f323d))

---
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Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "3.0.1"
+  ".": "4.0.0"
 }

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## [4.0.0](https://github.com/Speechify-AI/sdk-python/compare/3.0.1...4.0.0) (2026-08-18)
+
+
+### ⚠ BREAKING CHANGES
+
+* the default API version is now 2026-09-13.
+
+### Features
+
+* regenerate SDK for API 2026-09-13 with consent-challenge voice cloning ([#27](https://github.com/Speechify-AI/sdk-python/issues/27)) ([f3f323d](https://github.com/Speechify-AI/sdk-python/commit/f3f323dcba6f9aa9290be47ef8bbcaff06987d18))
+
 ## [3.0.1](https://github.com/SpeechifyInc/speechify-api-sdk-python/compare/3.0.0...3.0.1) (2026-07-10)