chore(main): release 0.3.20 (#577)

🤖 I have created a release *beep* *boop*
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##
[0.3.20](v0.3.19...v0.3.20)
(2025-12-03)


### Bug Fixes

* Improve streaming errors handling
([#576](#576))
([7ea7475](7ea7475))

---
This PR was generated with [Release
Please](https://github.com/googleapis/release-please). See
[documentation](https://github.com/googleapis/release-please#release-please).

Author: a2a-bot

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.3.20](https://github.com/a2aproject/a2a-python/compare/v0.3.19...v0.3.20) (2025-12-03)
+
+
+### Bug Fixes
+
+* Improve streaming errors handling ([#576](https://github.com/a2aproject/a2a-python/issues/576)) ([7ea7475](https://github.com/a2aproject/a2a-python/commit/7ea7475091df2ee40d3035ef1bc34ee2f86524ee))
+
 ## [0.3.19](https://github.com/a2aproject/a2a-python/compare/v0.3.18...v0.3.19) (2025-11-25)