Bump bson4jackson to 2.6.0
Bump bson4jackson to 2.6.0

ctrimble/jongo,applango/jongo,bguerout/jongo,edaubert/jongo,julienlavergne/jongo,ctrimble/jongo,bguerout/jongo,julienlavergne/jongo,applango/jongo,edaubert/jongo