Dependency bounds test failed

[github-actions]

Automated dependency bounds test mode failed before dependency upper-bound validation could run.

The weekly dependency maintenance workflow kept only dev dependency updates for the generated PR, if any, and skipped dependency range updates for this run.

lower scenario (lowest-direct)

• Package: agent-framework-anthropic
• Project path: packages/anthropic

Task 'pyright' failed for packages/anthropic at resolution 'lowest-direct'.
/home/runner/work/agent-framework/agent-framework/python/packages/anthropic/agent_framework_anthropic/_vertex_client.py
  /home/runner/work/agent-framework/agent-framework/python/packages/anthropic/agent_framework_anthropic/_vertex_client.py:23:10 - error: Import "google.auth.credentials" could not be resolved (reportMissingImports)
  /home/runner/work/agent-framework/agent-framework/python/packages/anthropic/agent_framework_anthropic/_vertex_client.py:23:56 - error: Type of "GoogleCredentials" is unknown (reportUnknownVariableType)
  /home/runner/work/agent-framework/agent-framework/python/packages/anthropic/agent_framework_anthropic/_vertex_client.py:47:9 - error: Type of parameter "credentials" is partially unknown
    Parameter type is "Unknown | None" (reportUnknownParameterType)
  /home/runner/work/agent-framework/agent-framework/python/packages/anthropic/agent_framework_anthropic/_vertex_client.py:120:9 - error: Type of parameter "credentials" is partially unknown
    Parameter type is "Unknown | None" (reportUnknownParameterType)
4 errors, 0 warnings, 0 informations

Workflow run: https://github.com/giles17/agent-framework/actions/runs/30791519637