HHH-19846 Drop JUnit 4 usage #6581

Job	Run time
Static code analysis	1m 35s
GraalVM 21 - base-database-service-23ai	18m 51s
GraalVM 21 - base-database-service-21c	24m 16s
OpenJDK 21 - hsqldb	12m 28s
GraalVM 21 - base-database-service-19c	19m 31s
OpenJDK 21 - postgresql	14m 4s
OpenJDK 21 - mysql	19m 0s
OpenJDK 21 - mariadb	12m 4s
OpenJDK 21 - mssql	18m 16s
OpenJDK 21 - db2	21m 50s
OpenJDK 21 - h2	13m 22s
OpenJDK 21 - oracle	23m 39s
OpenJDK 21 - sybase	24m 33s
OpenJDK 21 - edb	14m 34s
	3h 58m 3s

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