Bump hibernate-validator from 6.0.19.Final to 6.0.20.Final in /BulSchool#7

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dependabot/maven/BulSchool/org.hibernate.validator-hibernate-validator-6.0.20.FinalBulHub/BulSchool:dependabot/maven/BulSchool/org.hibernate.validator-hibernate-validator-6.0.20.FinalCopy head branch name to clipboard