[Release] google/adk-python v2.7.1: v2.7.1

Google ADK Python v2.7.1 is a bug fix release addressing two critical issues: restoring the OpenTelemetry 1.42.1 version ceiling for dependency compatibility and fixing validation of session initialization events. This patch release ensures proper dependency management and resolves session initialization validation problems reported in issue #5290.

Key Points

• •Restored OpenTelemetry 1.42.1 ceiling to prevent incompatible dependency versions
• •Fixed session initialization event validation to resolve issue #5290
• •Patch release focused on stability and dependency management
• •Addresses both dependency and core functionality issues
• •Maintains backward compatibility while fixing validation logic

Concepts