🔒 [security fix] Fix missing timeout in HTTP requests

[edithatogo]

🎯 What: Added a 10-second timeout to urllib.request.urlopen calls in check_github.py, query_databases.py, and snowball.py.
⚠️ Risk: Without a timeout, HTTP requests can hang indefinitely if the server doesn't respond or network issues occur, potentially causing resource exhaustion or application denial of service (DoS).
🛡️ Solution: Setting a strict 10-second timeout ensures requests fail fast, preserving system resources and preventing hang conditions.

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PR created automatically by Jules for task 12539628607058944147 started by @edithatogo

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[amazon-q-developer]

This PR correctly implements timeout protection for all HTTP requests, addressing the identified DoS risk. The 10-second timeout is applied consistently across all three scripts (check_github.py, query_databases.py, snowball.py), and existing error handling properly catches timeout exceptions. The JSON file updates normalize path separators to forward slashes for improved cross-platform compatibility. No defects found that would block merge.

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