Downgrade M2Crypto dependency to version 0.40.1

[amaringolo]

The lastest version of M2Crypto (0.41.0) was causing a dependency issue. After testing, it was determined that version 0.40.1 resolves the problem without introducing any new issues.

Summary

(short description of what does this PR, Issue #, etc.)

Checklist

• Classes, Variables, function and methods logic ok
• Comments written explaining what the code does
• All python code is PEP8 compliant (run black .)
• No lint issues (run flake8)
• Test coverage with pytest implemented
• Reviewers assigned (at least 1 mentor)

Manual test evidence

(attach command-line examples, execution output & logs, etc.)