chore(main): release 0.3.23 (#641)

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


##
[0.3.23](v0.3.22...v0.3.23)
(2026-02-13)


### Features

* add async context manager support to BaseClient
([#688](#688))
([ae9dc88](ae9dc88))
* add async context manager support to ClientTransport
([#682](#682))
([2e45c0d](2e45c0d))
* support async card modifiers
([#654](#654))
([a802500](a802500))
* support disabling OTel instrumentation via env var
([#611](#611))
([72216b9](72216b9))


### Bug Fixes

* do not crash on SSE comment line
([#636](#636))
([3dcb847](3dcb847))
* gRPC metadata header casing and invocation_metadata() call
([#676](#676))
([390b763](390b763))
* Improve error handling for Timeout exceptions on REST and JSON-RPC
clients ([#690](#690))
([2acd838](2acd838))
* map rejected task state in proto converters
([#668](#668))
([957e92b](957e92b)),
closes [#625](#625)
* **server:** fix deadlocks on agent execution failure in non-streaming
([#614](#614))
([d3c973f](d3c973f))


### Documentation

* explicitly mention supported spec version and transports in readme
([#681](#681))
([c91d4fb](c91d4fb)),
closes [#677](#677)
* Update README to include Code Wiki badge
([2698cc0](2698cc0))

---
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 +1,30 @@
 # Changelog
 
+## [0.3.23](https://github.com/a2aproject/a2a-python/compare/v0.3.22...v0.3.23) (2026-02-13)
+
+
+### Features
+
+* add async context manager support to BaseClient ([#688](https://github.com/a2aproject/a2a-python/issues/688)) ([ae9dc88](https://github.com/a2aproject/a2a-python/commit/ae9dc8897885ad26461083682dd7ba008d5af3cb))
+* add async context manager support to ClientTransport ([#682](https://github.com/a2aproject/a2a-python/issues/682)) ([2e45c0d](https://github.com/a2aproject/a2a-python/commit/2e45c0d54e47f1725b13c67c8e509b0e6e61efb6))
+* support async card modifiers ([#654](https://github.com/a2aproject/a2a-python/issues/654)) ([a802500](https://github.com/a2aproject/a2a-python/commit/a802500b3ad82845c1a6fc155f80e75a20a1bcab))
+* support disabling OTel instrumentation via env var ([#611](https://github.com/a2aproject/a2a-python/issues/611)) ([72216b9](https://github.com/a2aproject/a2a-python/commit/72216b988c0681e07d26ea8d5489a619d1ad6dda))
+
+
+### Bug Fixes
+
+* do not crash on SSE comment line ([#636](https://github.com/a2aproject/a2a-python/issues/636)) ([3dcb847](https://github.com/a2aproject/a2a-python/commit/3dcb84772fdc8a4d3b63b518ed491e5ed3d38d0a))
+* gRPC metadata header casing and invocation_metadata() call ([#676](https://github.com/a2aproject/a2a-python/issues/676)) ([390b763](https://github.com/a2aproject/a2a-python/commit/390b763d106eae3b2ca8ca78a2d0bfdc68f8fe2c))
+* Improve error handling for Timeout exceptions on REST and JSON-RPC clients ([#690](https://github.com/a2aproject/a2a-python/issues/690)) ([2acd838](https://github.com/a2aproject/a2a-python/commit/2acd838796d44ab9bfe6ba8c8b4ea0c2571a59dc))
+* map rejected task state in proto converters ([#668](https://github.com/a2aproject/a2a-python/issues/668)) ([957e92b](https://github.com/a2aproject/a2a-python/commit/957e92b9059792c44a40bbab18160996f5512145)), closes [#625](https://github.com/a2aproject/a2a-python/issues/625)
+* **server:** fix deadlocks on agent execution failure in non-streaming ([#614](https://github.com/a2aproject/a2a-python/issues/614)) ([d3c973f](https://github.com/a2aproject/a2a-python/commit/d3c973fe72afc0142f8a4c94d0c0fbe4ba2ddfe8))
+
+
+### Documentation
+
+* explicitly mention supported spec version and transports in readme ([#681](https://github.com/a2aproject/a2a-python/issues/681)) ([c91d4fb](https://github.com/a2aproject/a2a-python/commit/c91d4fba517190d8f7c76b42ea26914a4275f1d5)), closes [#677](https://github.com/a2aproject/a2a-python/issues/677)
+* Update README to include Code Wiki badge ([2698cc0](https://github.com/a2aproject/a2a-python/commit/2698cc04f15282fb358018f06bd88ae159d987b4))
+
 ## [0.3.22](https://github.com/a2aproject/a2a-python/compare/v0.3.21...v0.3.22) (2025-12-16)