Add DB dialect which is required by newest H2 release in tests

powerauth-java-server/src/test/resources/application.properties

@@ -24,6 +24,7 @@ spring.datasource.url=jdbc:h2:file:~/powerauth
 spring.datasource.username=sa
 spring.datasource.password=
 spring.datasource.driver-class-name=org.h2.Driver
+spring.jpa.database-platform=org.hibernate.dialect.H2Dialect
 
 # Hibernate Configuration
 spring.jpa.hibernate.ddl-auto=create-drop