chore(main): release 0.2.15 (#329)

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


##
[0.2.15](v0.2.14...v0.2.15)
(2025-07-21)


### Bug Fixes

* Add Input Validation for Empty Message Content
([#327](#327))
([5061834](5061834))
* Prevent import grpc issues for Client after making dependencies
optional ([#330](#330))
([53ad485](53ad485)),
closes [#326](#326)

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

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

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## [0.2.15](https://github.com/a2aproject/a2a-python/compare/v0.2.14...v0.2.15) (2025-07-21)
+
+
+### Bug Fixes
+
+* Add Input Validation for Empty Message Content ([#327](https://github.com/a2aproject/a2a-python/issues/327)) ([5061834](https://github.com/a2aproject/a2a-python/commit/5061834e112a4eb523ac505f9176fc42d86d8178))
+* Prevent import grpc issues for Client after making dependencies optional ([#330](https://github.com/a2aproject/a2a-python/issues/330)) ([53ad485](https://github.com/a2aproject/a2a-python/commit/53ad48530b47ef1cbd3f40d0432f9170b663839d)), closes [#326](https://github.com/a2aproject/a2a-python/issues/326)
+
 ## [0.2.14](https://github.com/a2aproject/a2a-python/compare/v0.2.13...v0.2.14) (2025-07-18)