Upgrade from SLF4J to version 2

The customer would like to see the SLF4J version in Bloomreach upgraded to version 2.x
Apparently, this has an impact on Log4J and to solve this we need to replace log4j-slf4j-impl with log4j-slf4j2-impl.

What happens now is: when <slf4j.version/> is overwritten with version 2.0.09, the logging stops with the message:

SLF4J: No SLF4J providers were found.

SLF4J: Defaulting to no-operation (NOP) logger implementation

SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.

SLF4J: Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x or earlier.

SLF4J: Ignoring binding found at jar:file:/usr/local/tomcat/shared/lib/log4j-slf4j-impl-2.21.0.jar 

To resolve this message:

log4j-slf4j-impl should be replaced with log4j-slf4j2-impl.