Pre-release: Update version to 0.12.2 (#509)

This PR updates the version to 0.12.2.

By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice.

---------

Co-authored-by: github-actions <[email protected]>

Author: aws-application-signals-bot

CHANGELOG.md

@@ -11,5 +11,7 @@ For any change that affects end users of this package, please add an entry under
 If your change does not need a CHANGELOG entry, add the "skip changelog" label to your PR.
 
 ## Unreleased
+
+## v0.12.2 - 2025-10-22
 - [PATCH] Only decode JSON input buffer in Anthropic Claude streaming
     ([#497](https://github.com/aws-observability/aws-otel-python-instrumentation/pull/497))

aws-opentelemetry-distro/src/amazon/opentelemetry/distro/version.py

@@ -1,4 +1,4 @@
 # Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-__version__ = "0.12.1"
+__version__ = "0.12.2"