Refactor Github Action per b/485167538

[google-admin]

This is a http://go/LSC run by http://go/ghss to automatically refactor your Github Actions per http://b/485167538.

This is a PR to help you upgrade to the latest standards in Github Actions.

Please merge this PR to accept the changes. NOTE: if you do not accept this PR, it may be force merged by the GHSS team. See http://b/485167538 for more details.

[gemini-code-assist]

Note

Gemini is unable to generate a summary for this pull request due to the file types involved not being currently supported.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 7e098fc

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[github-actions]

Vertex AI Mock Responses Check ⚠️

A newer major version of the mock responses for Vertex AI unit tests is available. update_vertexai_responses.sh should be updated to clone the latest version of the responses: v16.2