fix(decorators-3.py): datetime.utcnow() is deprecated replace with .datetime.utcnow()

Author: RotRotAl

08.Decorators/decorators-3.py

@@ -12,9 +12,9 @@
 
 def my_decorator(inner):
     def inner_decorator(num_copy):
-        print(datetime.datetime.utcnow())
+        print(datetime.now(datetime.UTC))
         inner(int(num_copy) + 1)
-        print(datetime.datetime.utcnow())
+        print(datetime.now(datetime.UTC))
 
     return inner_decorator
 
@@ -32,4 +32,4 @@ def decorated(number):
 2022-07-16 12:26:14.060603
 This happened : 6
 2022-07-16 12:26:14.060603
-'''
+'''