Add CVE-2019-12728 to grails-core
From https://nvd.nist.gov/vuln/detail/CVE-2019-12728:
Grails before 3.3.10 used cleartext HTTP to resolve the SDKMan notification service. NOTE: users' apps were not resolving dependencies over cleartext HTTP.
See https://github.com/grails/grails-core/issues/11250
See https://objectcomputing.com/news/2019/05/30/possible-grails-mitm-vulnerability
Gemnasium page: https://deps.sec.gitlab.com/packages/maven/org.grails/grails-core/versions
Edited by Fabien Catteau