Upgrade to Jetty 9.4.31, Groovy 2.5.13, Hibernate ORM 5.4.19, EclipseLink 2.7.7, Checkstyle 8.35
Upgrade to Jetty 9.4.31, Groovy 2.5.13, Hibernate ORM 5.4.19, EclipseLink 2.7.7, Checkstyle 8.35

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