Fix code scanning

[Khalid1G]

app.use(
  mongoSanitize({
    replaceWith: "_",
  })
); 

The mongo-sanitize library helps prevent MongoDB query injection by replacing prohibited characters in user input with underscores '_'. This is crucial for security as it protects against potential malicious attacks on the database.

To utilize this functionality, the replaceWith option is set to '_' in the mongoSanitize middleware configuration. This ensures that any characters that could potentially alter the behavior of MongoDB queries are replaced, making the input safe to use in database operations.

By incorporating this middleware, we enhance the security of the application and reduce the risk of MongoDB injection vulnerabilities