Fix transitive vulnerabilities alerts for js-yaml and brace-expansion

[manishdait]

Dependabot flagged two high-severity vulnerabilities introduced transitively through jest in .github/scripts/package-lock.json

• https://github.com/hiero-ledger/hiero-sdk-python/security/dependabot/13
• https://github.com/hiero-ledger/hiero-sdk-python/security/dependabot/12

[github-actions]

Thanks for your submission.

This issue is awaiting approval from @hiero-ledger/hiero-sdk-python-triage and @hiero-ledger/hiero-sdk-python-committers and @hiero-ledger/hiero-sdk-python-maintainers.

[github-actions]

Approved by @hiero-ledger/hiero-sdk-python-triage and @hiero-ledger/hiero-sdk-python-committers and @hiero-ledger/hiero-sdk-python-maintainers.