chore(deps): update ci-info to 4.4.0 across all packages

[X-Guardian]

Description

Bumps ci-info from 3.9.0 to 4.4.0 (latest) in the two packages that declare it as a dependency:

• @cdktn/commons
• @cdktn/cli-core

This is a major version bump (3.x → 4.x). The only API used in the codebase is ciInfo.isCI and ciInfo.name (in commons/src/checkpoint.ts and cli-core/src/lib/error-reporting.ts), both of which are unchanged in v4. v4's breaking change was dropping support for Node < 8; it still ships CommonJS, so the existing default import ciInfo from "ci-info" continues to work with no code changes.

Checklist

• I have updated the PR title to match CDKTN's style guide
• I have run the linter on my code locally
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation if applicable
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works if applicable
• New and existing unit tests pass locally with my changes