fix(deps): update find-up to v8 with API migration

[Copilot]

• Identify issues: find-up v8 changed API from findUp.sync() to named export findUpSync()
• Update lib/cli/config.js to use new findUpSync API
• Update lib/cli/options.js to use new findUpSync API
• Update test/node-unit/cli/options.spec.js mock to use { findUpSync: ... } instead of { sync: ... }
• Update test/node-unit/cli/config.spec.js mock and assertions to use findUpSync
• Regenerate package-lock.json with npm 10
• Fix format:check CI failure: updated .github/workflows/mocha.yml to match main branch (paths-ignore entries and PR types filter) and run prettier to format properly
• Validated: 1100 unit tests passing, smoke tests passing, format:check passing, TypeScript checks passing

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[linux-foundation-easycla]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.84%. Comparing base (6cb2710) to head (6261357).
⚠️ Report is 6 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5756      +/-   ##
==========================================
- Coverage   88.85%   88.84%   -0.01%     
==========================================
  Files          66       66              
  Lines        4774     4771       -3     
  Branches      976      976              
==========================================
- Hits         4242     4239       -3     
  Misses        532      532              

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[mark-wiemer]

@copilot format:check is failing, please use npm 10 and run all checks just like mocha.yml does in GitHub Actions

[Copilot]

@copilot format:check is failing, please use npm 10 and run all checks just like mocha.yml does in GitHub Actions

Fixed in commit 4d3d81c. The CI format:check was failing because the .github/workflows/mocha.yml in this branch was outdated compared to main (missing additional paths-ignore entries and pull_request.types). When CI created a merge commit, the longer paths-ignore list from main needed prettier's multi-line formatting. Updated mocha.yml to match the current main branch version and ran prettier to format it correctly.

All CI checks now pass locally with npm 10: format:check, tsc, test-smoke, and test-node:unit (1100 passing).

[mark-wiemer]

closing, gonna do these manually one at a time