chore(deps): bump @vitest/mocker and vitest - #7

Process completed with exit code 2.

Argument of type 'Mock<() => Promise<unknown>>' is not assignable to parameter of type 'Mock<() => Promise<{ response: { schema_version: string; gates: { authority_or_required_human_review: { triggered: boolean; reason: null; }; known_material_concern: { triggered: boolean; reason: null; }; material_unknown: { ...; }; inherent_human_accountability: { ...; }; }; clear_reason: string; key_risks: never[];...'.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4, actions/setup-node@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/