Update requests dependency to >=2.33.0 (CVE-2026-25645)

[luyiourwong]

The current pinned version requests==2.32.3 is vulnerable to CVE-2026-25645.

While this library's standard usage is not directly affected, users who integrate this package with other dependencies that call requests.utils.extract_zipped_paths() could be exposed to this vulnerability.

Additionally, updating to >=2.33.0 will eliminate security warnings when users scan their dependencies.

Recommendation:
Update requirements.txt to use requests==2.33.0 instead of requests==2.32.3.