Bump hibernate-core from 5.1.0.Final to 5.3.20.Final in /hibernate-envers-playground#53

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dependabot/maven/hibernate-envers-playground/org.hibernate-hibernate-core-5.3.20.Finaltestusr/Experiments:dependabot/maven/hibernate-envers-playground/org.hibernate-hibernate-core-5.3.20.FinalCopy head branch name to clipboard