Create a URL-safe version of a given string.
I like cats!
The URL-safe version of the string "I like cats!" would be "I%20like%20cats%21".
Complete the following task based on the instruction and optional input provided.### Instruction:
Create a URL-safe version of a given string.

### Input:
I like cats!

### Output:
The URL-safe version of the string "I like cats!" would be "I%20like%20cats%21".