Resolve Unicode issue with latest python3.13 (ibmdb#155)

Signed-off-by: deMalte <demalte@kochnetonline.de>

Author: devMalteK

ibm_db_sa/base.py

@@ -371,7 +371,7 @@ def visit_select(self, select, **kwargs):
         sql_ori = compiler.SQLCompiler.visit_select(self, select, **kwargs)
         if offset is not None:
             __rownum = 'Z.__ROWNUM'
-            sql_split = re.split("[\s+]FROM ", sql_ori, 1)
+            sql_split = re.split(r"[\s+]FROM ", sql_ori, 1)
             sql_sec = ""
             sql_sec = " \nFROM %s " % (sql_split[1])