Fix: Deprecate Title of strings, bytes modules

[Hoàng Mirs]

Issue

• strings.Title is deprecated, we should update that code to avoid the error.
• https://stackoverflow.com/questions/71620717/in-go-1-18-strings-title-is-deprecated-what-to-use-now-and-how

Expected

The application should start properly without errors

Steps to reproduce

1. Generate a new gin project
2. Follow the README to start the server
3. Observe the console