[PWGDQ]: updating generator Pythia8 (#2148)

Using a configuration file with Run 3 beam energy and new SigFitDefPar parameters

Author: sgaretti

MC/config/PWGDQ/ini/Generator_InjectedPromptCharmoniaFwdy_TriggerGap_PbPb5TeV.ini

@@ -5,4 +5,5 @@ funcName=GeneratorPythia8InjectedPromptCharmoniaGapTriggered(5,7)
 
 [GeneratorPythia8]
 ### config=${O2DPG_MC_CONFIG_ROOT}/MC/config/PWGDQ/pythia8/generator/pythia8_inel_triggerGap_5TeV.cfg
-config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_hi.cfg
+### config=${O2DPG_MC_CONFIG_ROOT}/MC/config/common/pythia8/generator/pythia8_hi.cfg
+config=${O2DPG_MC_CONFIG_ROOT}/MC/config/ALICE3/pythia8/generator/pythia8_PbPb_536tev.cfg