[package-json-lint-config-terra] upgraded to package-json-lint v2

[sdadn]

Summary

This PR upgrades the peerDependency for package-json-lint in package-json-lint-config-terra to v2 to resolve a conflicting peer-dependency issue.

Testing

This change was tested using:

• [ ] WDIO
• [ ] Jest
• [ ] Visual testing (please attach a screenshot or recording)
• [ ] Other (please describe below)
• [x] No tests are needed

Reviews

In addition to engineering reviews, this PR needs:

• [ ] UX review
• [ ] Accessibility review
• [ ] Functional review

Additional Details

---

Thank you for contributing to Terra. @cerner/terra

[kenk2]

Approved, but do we need an upgrade guide for this?

[sdadn]

Approved, but do we need an upgrade guide for this? I originally thought we wouldn't need one but now I think about it, it wouldn't hurt to have one for clarity. Good catch!

Added here: 4479973