test(vertexai): update mock responses to v10

[dlarocque]

Update Vertex AI mock responses to v10.

[changeset-bot]

⚠️ No Changeset found

Latest commit: f12a318

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (1363ecc) and merge commit (cf4bd83).

Test Logs

• Base (1363ecc): https://github.com/firebase/firebase-js-sdk/actions/runs/14484800684
• Merge (cf4bd83): https://github.com/firebase/firebase-js-sdk/actions/runs/14601186171

1. https://storage.googleapis.com/firebase-sdk-metric-reports/E54r7bd2bi.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (1363ecc) and merge commit (cf4bd83).

Test Logs

• Base (1363ecc): https://github.com/firebase/firebase-js-sdk/actions/runs/14484800684
• Merge (cf4bd83): https://github.com/firebase/firebase-js-sdk/actions/runs/14601186171

1. https://storage.googleapis.com/firebase-sdk-metric-reports/zB7vF6ubPj.html