Write a program celebrate_birthday.py that has a function in it called celebrate_birthday(). That function takes a parameter age, increments it by 1, and returns that updated age to the caller.
The main() function in the program should have the user enter their age, then use the function to change that person's age and print out the new result.
Sample output:
Enter your age: 45
When you next celebrate your birthday, you'll be 46 years old!