a5b5b46831
Merge https://github.com/google/adk-python/pull/6523
Syncs version bump and CHANGELOG from release v2.6.0 to main.
Co-authored-by: Kathy Wu <wukathy@google.com>
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/6523 from google:release/v2.6.0 a5791dab0b
PiperOrigin-RevId: 956679217