Adopt to SLF4J 2.0 upgrade

Tests fail with:

```
21:25:18  java.lang.ClassCastException: class org.slf4j.helpers.NOPLogger cannot be cast to class ch.qos.logback.classic.Logger (org.slf4j.helpers.NOPLogger and ch.qos.logback.classic.Logger are in unnamed module of loader 'app')
21:25:18  	at org.springframework.data.mongodb.core.mapping.event.LoggingEventListenerTests.setUp(LoggingEventListenerTests.java:48)
```