fix: update metal codebase to adjust it to 0.9 version of crates

[TheMenko]

Describe your changes

Before this can be merged, it is required for miden-gpu PR to be merged as well.

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 could you also update the changelog?