Fix security vulnerabilities in dependencies

[ZechCodes]

Summary

• Fix CVE-2024-21503 (Medium severity): Black ReDoS vulnerability by updating from 23.12.1 to 24.10.0
• Fix high severity ReDoS vulnerability in py library by updating pytest from 6.2.5 to 8.4.0 (removes py dependency completely)
• Update other dependencies for security patches including certifi, urllib3, requests

Security Fixes

Black (CVE-2024-21503)

• Issue: Regular Expression Denial of Service when processing malicious input with many leading tab characters
• Fix: Updated to Black 24.10.0 which includes the security patch
• Impact: Low risk since Black is a development tool

py Library (High Severity)

• Issue: ReDoS vulnerability when used with subversion
• Fix: Updated pytest to 8.4.0 which no longer depends on the vulnerable py library
• Impact: Completely eliminates the vulnerability by removing the dependency

Test Results

✅ All 140 tests pass with updated dependencies
✅ No breaking changes detected
✅ Dependency tree cleaned up (py library removed entirely)

Dependencies Updated

• black: 23.12.1 → 24.10.0
• pytest: 6.2.5 → 8.4.0
• py library: Removed (no longer needed)
• Various other security patches applied

🤖 Generated with Claude Code