[jdbc] Fix logging not working (#15722)

[jdbc] Fix logging not working (#15722)

The dependency change in #15659 caused slf4j to be embedded into the bundle.

As a result the bundle no longer uses Pax Logging so it cannot find an SLF4J provider and logs the following when it is installed:

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.

Signed-off-by: Wouter Born <github@maindrain.net>