cubicweb-celerytask #16640893 add support for the CRITICAL log level [validation pending]

prioritynormal
typeenhancement
done in0.3.0
load left0.000
closed by#f52d718a1cd3 [views] add the CRITICAL log level in the list of known levels (closes #16640893)
patch[views] add the CRITICAL log level in the list of known levels (closes #16640893) [applied]