Pin black version in tox.ini to 23.12.1
Change-Id: I3b792b60f41beac781add0d23255b2ce01da7fb8
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>
Change-Id: I3b792b60f41beac781add0d23255b2ce01da7fb8
Signed-off-by: garciadeblas <gerardo.garciadeblas@telefonica.com>