chore: Bumps version to v1.21.0 and updates CHANGELOG.md

Co-authored-by: Xiang (Sean) Zhou <seanzhougoogle@google.com>
PiperOrigin-RevId: 843427582

chore: Bumps version to v1.20.0 and updates CHANGELOG.md

Co-authored-by: Ankur Sharma <ankusharma@google.com>
PiperOrigin-RevId: 839930279

feat: Propagate `application_name` set for the BigQuery Tools as BigQ…

…uery job labels

This change will help the tools user identify per agent job usage in BQ console and INFORMATION_SCHEMA views. This change fulfills the feature request #3582. Here is a demo after change: screen/C6YB4ge2FM2ZREi.

PiperOrigin-RevId: 834480140

fix: Update dependency version constraints to be based on PyPI versions

Co-authored-by: Yeesian Ng <ysian@google.com>
PiperOrigin-RevId: 828460860

chore:Rename conformance `create` command to `record`

PiperOrigin-RevId: 822708044

feat: Set agent_state in invocation context right before yielding the…

… checkpoint event

PiperOrigin-RevId: 816804179

fix: unbreak client closed errors when using vertexai session service

PiperOrigin-RevId: 811911528

Release v1.15.0

chore: Add back the request logging in RemoteA2aAgent given the loggi…

…ng was already fixed

PiperOrigin-RevId: 806551434

chore: Release ADK 1.14.0

PiperOrigin-RevId: 805506354