Documentation: Recommend Records instead of Lombok for class based projections

[grubeninspekteur]

The documentation section on Class-based Projections (DTOs) recommends Lombok's @Value annotation to reduce boilerplate of DTOs. With the Java 17 baseline of Spring 6, it would be better to just replace the example with a record, mention that DTOs can be arbitrary classes with a constructor, and remove the mention of Lombok.

[mp911de]

Good point. Records are ideal to be used for projections.

[grubeninspekteur]

Closing in favor of spring-projects/spring-data-commons#2793 as the documentation for projections resides in Spring Data Commons.