5G RFsim: increase PRACH threshold to 20dB to avoid misdetections

ci-scripts/conf_files/gNB_SA_DU.conf

@@ -205,7 +205,7 @@ L1s = (
   num_cc = 1;
   tr_n_preference = "local_mac";
   thread_pool_size = 8;
-  prach_dtx_threshold = 120;
+  prach_dtx_threshold = 200;
   pucch0_dtx_threshold = 150;
   ofdm_offset_divisor = 8; #set this to UINT_MAX for offset 0
 }

ci-scripts/conf_files/gnb.sa.band66.fr1.106PRB.usrpn300.conf

@@ -218,6 +218,7 @@ L1s = (
         num_cc = 1;
         tr_n_preference = "local_mac";
         pusch_proc_threads = 8;
+        prach_dtx_threshold = 200;
   ofdm_offset_divisor = 8; #set this to UINT_MAX for offset 0
     }
 );