Change PRACH Configuration Index in AW2S gNB config file

- PRACH Configuration Index = 98 is not suSpported by the Amarisoft UE simulator, as a number of PRACH occasions within the PRACH slot is > 1
- for PRACH Configuration Index = 100, number of time-domain PRACH occasions within a PRACH slot is 1

ci-scripts/conf_files/gnb.sa.band78.51prb.aw2s.ddsuu.conf

@@ -75,7 +75,7 @@ gNBs =
         initialULBWPsubcarrierSpacing                                           = 1;
       #rach-ConfigCommon
         #rach-ConfigGeneric
-          prach_ConfigurationIndex                                  = 98;
+          prach_ConfigurationIndex                                  = 100;
 #prach_msg1_FDM
 #0 = one, 1=two, 2=four, 3=eight
           prach_msg1_FDM                                            = 0;