refactor: replace ahash with foldhash

[robjtede]

PR Type

PR_TYPE

PR Checklist

• [ ] Tests for the changes have been added / updated.
• [ ] Documentation comments have been added / updated.
• [ ] A changelog entry has been made for the appropriate packages.
• [ ] Format code with the latest stable rustfmt.
• [ ] (Team) Label with affected crates and semver status.

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