Migrate to most recent Winterfell release

[Al-Kindi-0]

Describe your changes

As the title says. Once the corresponding PR in the crypto crate crate is merged I will update the dependency in this PR.

Checklist before requesting a review

• Repo forked and branch created from next according to naming convention.
• Commit messages and codestyle follow conventions.
• Relevant issues are linked in the PR description.
• Tests added for new functionality.
• Documentation/comments updated according to changes.

[bobbinth]

Oh - and we should also fix the CI (seems like no_std compilation is failing?).

[Al-Kindi-0]

All comments were addressed, thanks all for the feedback