Update combine_extend_snp.py

Update required due to change in scikit-rf

Author: VolkerMuehlhaus

scripts/combine_extend_snp.py

@@ -9,6 +9,7 @@
 
 import os,re, json, math
 import skrf as rf
+from   skrf.network import connect
 import numpy as np
 
 
@@ -279,7 +280,7 @@ def port_deembedding (snp_filename, port_info_available, port_info_data):
             # cascade with the main network 
             # due to internal renumbering the new port always appears at the end
             # after iterating over all ports we have the correct order again
-            ntwk = rf.connect(inductor, 0, ntwk, 0)
+            ntwk = connect(inductor, 0, ntwk, 0)
 
 
         filename, file_extension = os.path.splitext(snp_filename)