Add route to update user data and refactor for Express v5 changes

[hussein-m-kandil]

What’s New

• Added a PATCH /users/:id route for updating user data.

Refactoring

• Removed unnecessary try...catch blocks due to built-in error handling in Express v5.
• Added logging for errors passed to the app.listen callback.
• Modified how the app error handler logs the error.

Notes

• This assumes all routes rely on the centralized app error-handling middleware.