Fix code scanning alert no. 8: Use of `Kernel.open` or `IO.read` or similar sinks with a non-constant value

[george-gca]

Fixes https://github.com/george-gca/multi-language-al-folio/security/code-scanning/8

To fix the problem, we should replace the use of URI.open with a safer alternative that does not call Kernel.open internally. Specifically, we can use Net::HTTP to perform the HTTP request and read the file content. This approach avoids the security risks associated with URI.open.

1. Replace the URI.open call with Net::HTTP to fetch the content of the URL.
2. Update the download_file method to use Net::HTTP for downloading the file.
3. Ensure that the new implementation maintains the existing functionality of downloading the file and saving it to the specified destination.

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

[netlify[bot]]

❌ Deploy Preview for multi-language-al-folio failed. Why did it fail? →

Name	Link
🔨 Latest commit	6eb78c53143cc32fc6b5983db262e29714ce1975
🔍 Latest deploy log	https://app.netlify.com/sites/multi-language-al-folio/deploys/66f311542153a000082cc022