Security Advisory: Verify TLS certificates for XHS HTTP requests

Security Improvement

A security improvement has been submitted via PR #481: https://github.com/JoeanAmier/XHS-Downloader/pull/481

Summary: Verify TLS certificates for XHS HTTP requests

This PR was generated by an automated security scan and has passed focused tests. Please review the PR for details and merge at your discretion.

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Submitted by: @failsafesecurity (FailSafe Security Research)