fm11rf08s_full: log file format use utf-8

Signed-off-by: Ame Neko <91962831+amenekowo@users.noreply.github.com>

client/pyscripts/fm11rf08s_full.py

@@ -95,7 +95,7 @@ def lprint(s='',  end='\n', flush=False, prompt="[" + color("=", fg="yellow") +
     if log is True:
         global logbuffer
         if logfile is not None:
-            with open(logfile, 'a') as f:
+            with open(logfile, 'a', encoding='utf-8') as f:
                 f.write(s + end)
         else:
             # buffering