Bump hibernate-core from 4.3.5.Final to 5.3.20.Final in /20172018/twitter-manual#20

dependabot[bot] wants to merge 1 commit intomastergguibon/CoursesJavaEE:masterfrom

dependabot/maven/20172018/twitter-manual/org.hibernate-hibernate-core-5.3.20.Finalgguibon/CoursesJavaEE:dependabot/maven/20172018/twitter-manual/org.hibernate-hibernate-core-5.3.20.FinalCopy head branch name to clipboard