chore: update to vally 0.7.0

[JasonYeMSFT (JasonYeMSFT)]

Description

Update Vally to version 0.7.0. Vally 0.7.0 removed the buggy reference linter that raises false positive issues for orphaned reference files. This will remove the lint error we get for azure-compute in PR checks.

Checklist

• Tests pass locally (cd tests && npm test)
• Title has one of the prefixes: fix:, feat:, feature:, chore:, misc:, test:, eval:
• If modifying skill descriptions: verified routing correctness with integration tests (In tests/, npm run test:integration -- <skill> or npm run test:vally -- --skill <skill>)

Related Issues

[Copilot]

Pull request overview

Updates the test harness’ Vally dependency to @microsoft/vally-cli@^0.7.0 and aligns the custom graders’ metadata with the newer Vally grader schema.

Changes:

• Bump @microsoft/vally-cli from ^0.6.0 to ^0.7.0 (and refresh the lockfile).
• Update custom grader metadata to use the new behavior fields (requiresLlmClient, requiresWorkspace) and remove deprecated metadata fields / checks.

Show a summary per file

File	Description
tests/vally/json-grader.ts	Updates grader metadata schema for Vally 0.7 and removes the workspaceStatus-based guard.
tests/vally/java-upgrade-grader.ts	Updates grader metadata schema for Vally 0.7 and removes the workspaceStatus-based guard.
tests/package.json	Bumps @microsoft/vally-cli dependency to ^0.7.0.
tests/package-lock.json	Lockfile refresh reflecting Vally 0.7.0 and transitive dependency updates.

Review details

Files not reviewed (1)

• tests/package-lock.json: Generated file

• Files reviewed: 3/4 changed files
• Comments generated: 0
• Review effort level: Low

[Jon Gallant (jongio)]

Only two files in the repo implement GraderMetadata (json-grader.ts and java-upgrade-grader.ts), and both are updated here. No missed siblings for the 0.7.0 schema migration.