chore(main): release 1.18.0 (#891)

* chore(main): release 1.18.0

* Update CHANGELOG.md

* Update CHANGELOG.md

---------

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

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,25 @@
 # Changelog
 
+## [1.18.0](https://github.com/googleapis/python-genai/compare/v1.17.0...v1.18.0) (2025-05-30)
+
+
+### Features
+
+* Adding `thought_signature` field to the `Part` to store the signature for thoughts. ([303f906](https://github.com/googleapis/python-genai/commit/303f9069f508e544fe2f9c680a700624057b6341))
+* Include UNEXPECTED_TOOL_CALL enum value to FinishReason for Vertex AI APIs. ([ccbc66e](https://github.com/googleapis/python-genai/commit/ccbc66e199b23cecf3a4bd0680c6a52b1260cedb))
+* Support ephemeral auth tokens as API keys for live connections in Python. ([db1d7ee](https://github.com/googleapis/python-genai/commit/db1d7eec869525d41ffc7b1570bd597b12fab323))
+
+### Bug Fixes
+
+* Ignore struct types when performing forward compatibility field filtering ([7024011](https://github.com/googleapis/python-genai/commit/702401102a34e21e94201c9cc48aa7fe2db68958))
+
+### ⚠ BREAKING CHANGES TO EXPERIMENTAL FEATURES
+
+* Removed `live_ephemeral_connect`, ephemeral auth tokens can now be used as API keys ([db1d7ee](https://github.com/googleapis/python-genai/commit/db1d7eec869525d41ffc7b1570bd597b12fab323))
+* Rename LiveEphemeralParameters to LiveConnectConstraints. ([6719faf](https://github.com/googleapis/python-genai/commit/6719faf6be905b192397cfc361283f2bb9cad8de))
+
+
+
 ## [1.17.0](https://github.com/googleapis/python-genai/compare/v1.16.1...v1.17.0) (2025-05-28)
 
 

google/genai/version.py

@@ -13,4 +13,4 @@
 # limitations under the License.
 #
 
-__version__ = '1.17.0' # x-release-please-version
+__version__ = '1.18.0' # x-release-please-version

pyproject.toml

@@ -3,7 +3,7 @@ requires = ["setuptools", "wheel", "twine>=6.1.0", "packaging>=24.2", "pkginfo>=
 
 [project]
 name = "google-genai"
-version = "1.17.0"
+version = "1.18.0"
 description = "GenAI Python SDK"
 readme = "README.md"
 license = {text = "Apache-2.0"}