fix: use utf-8 encoding in check_output

fix the output from byte literal to utf-8 decoded string

demo_clock_and_IP.py

@@ -5,7 +5,7 @@
 from datetime import datetime
 from subprocess import check_output
 display = drivers.Lcd()
-IP = check_output(["hostname", "-I"]).split()[0].decode('ascii')
+IP = check_output(["hostname", "-I"], encoding="utf8").split()[0]
 try:
     print("Writing to display")
     while True: