BLD: Update cryptography to 50.0.0 to fix vuln

[slangeveld]

Resolves #242

Update cryptography to version 50.0.0 to fix vulnerability. Need to do this manually as 50.0.0 is younger than 7 days.
Also updated other depedencies.

Checklist

• Tests added (if not, comment why): Only config
• Test coverage equal or up from main (run pytest with --cov=<packagename> --cov-report term-missing)
• If not squash merging, every commit passes tests
• Appropriate commit prefix and precise commit message used
• All debug prints and unnecessary comments removed
• Docstrings are correct and updated
• Documentation is updated, if necessary
• Latest main rebased/merged into branch
• Added comments on this PR where appropriate to help reviewers
• Moved issue status on project board
• Checked the boxes in this checklist ✅