fix: abort test runs on timeout

[nawforce]

Summary

Fixes timeout-abort handling in test-runner and refreshes tooling, now consuming the released @apexdevtools/sfdx-auth-helper 2.1.1.

• abort Apex test runs when the runner hits its global timeout, while preserving the original timeout error if aborting fails
• adopt @apexdevtools/sfdx-auth-helper ^2.1.1
• keep the branch on 3.3.1-beta.0 as the likely next beta candidate
• refresh TypeScript, lint, test, package manager, and GitHub Actions tooling
• widen the mocked test harness timeout in test/Setup.ts so the timeout-specific tests do not fail spuriously under the refreshed toolchain

Closes #77.
Closes #81.

Validation

• npm run build
• npm test
• npm run test:pack

Release note

This should stay on the beta path because it includes a real runtime behaviour change in addition to the tooling refresh.