feat: release v3.4.0

Highlights since v3.3.4:

- Python 3.14 support (#253)
- Stream accept tokens (#255)
- Webhook handling spec — regenerated SDK + dual-API (#243)

Author: aliev

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "getstream"
-version = "3.3.4"
+version = "3.4.0"
 description = "GetStream Python SDK - Build scalable activity feeds, chat, and video calling applications"
 authors = [
     { name = "sachaarbonel", email = "sacha.arbonel@hotmail.fr" },