Fix code scanning alert no. 1: Information exposure through an exception

[fgalan]

Fixes https://github.com/telefonicaid/fiware-orion/security/code-scanning/1

To fix the problem, we need to ensure that detailed error messages, including stack traces, are not exposed to the end users. Instead, we should log the detailed error information on the server and return a generic error message to the user. This can be achieved by modifying the record_request function to log the exception details and append a generic error message to the response string.

1. Modify the record_request function to log the exception details instead of appending them to the response string.
2. Ensure that the /dump endpoint returns the accumulated data without exposing sensitive error information.

Suggested fixes powered by Copilot Autofix. Review carefully before merging.