Swagger Client 3.9.2 Released!

This release includes housekeeping tasks that should resolve all current npm audit advisories displayed when installing Swagger Client.

Changelog

• housekeeping: @kyleshockey/js-yaml -> js-yaml (via #1459)
• housekeeping: webpack@4 + babel@7 (via #1455)
• housekeeping: resolve npm audit items + add security-audit script (via #1456)