Create a function that transforms sentences ending with multiple question marks ? or exclamation marks ! into a sentence only ending with one without changing punctuation in the middle of the sentences.
no_yelling("What went wrong?????????") ➞ "What went wrong?"
no_yelling("Oh my goodness!!!") ➞ "Oh my goodness!"
no_yelling("I just!!! can!!! not!!! believe!!! it!!!") ➞ "I just!!! can!!! not!!! believe!!! it!"
# Only change repeating punctuation at the end of the sentence.
no_yelling("Oh my goodness!") ➞ "Oh my goodness!"
# Do not change sentences where there exists only one or zero exclamation marks/question marks.
no_yelling("I just cannot believe it.") ➞ "I just cannot believe it."
?!??!).