Update to final rel21 mc16 DNN tune for DNN triggers
Change the path of the DNN model for triggers from (rel21_20220103) to the final rel21 mc16 DNN tune (rel21_20220421). The new DNN tune targets a higher signal efficiency than its previous version using a relax parameter r of 0.3. The reference file of DNN trigger counts is also updated. Adding @cjmeyer, @jodafons.