Update zip32 requirement from 0.1 to 0.2

[dependabot]

Updates the requirements on zip32 to permit the latest version.

Changelog

Sourced from zip32's changelog.

[0.2.0] - 2025-02-20

Added

• zip32::registered module, implementing hardened-only key derivation for an application protocol specified in a ZIP.
• zip32::ChildIndex::PRIVATE_USE
• zip32::hardened_only::HardenedOnlyKey::{from_parts, derive_child_with_tag}

Changed

• The type of zip32::hardened_only::Context::CKD_DOMAIN has changed, in order to support child derivation with tags.

Deprecated

• zip32::arbitrary::SecretKey::into_full_width_key. This API is cryptographically unsafe because it depends on a restriction that cannot be enforced. Use zip32::registered::cryptovalue_from_subpath instead.

[0.1.3] - 2024-12-13

Fixed

• Disabled default features of dependencies to fix no-std support.

[0.1.2] - 2024-10-22

Added

• zip32::arbitrary module, implementing hardened-only "arbitrary" key derivation that needs no ecosystem-wide coordination.
• zip32::hardened_only module, providing a generic hardened-only key derivation framework (initially used for Orchard and zip32::arbitrary).
• impl {PartialOrd, Ord, Hash} for zip32::DiversifierIndex

[0.1.1] - 2024-03-14

Added

• impl {Clone, Copy, Debug, PartialOrd, Ord, PartialEq, Eq, Hash} for zip32::fingerprint::SeedFingerprint
• zip32::fingerprint::SeedFingerprint::from_bytes

[0.1.0] - 2023-12-06

Initial release.

Commits

• b9787df Release zip32 version 0.2.0
• 6632f2c Merge pull request #24 from daira/support-tagged-child-derivation
• 2c177cb Remove potential panics from public API of registered key derivation.
• 49c65fc Update documentation, adapt to changes in zcash_spec API, and add
• fa7805d Add additional required methods to the public API
• bd96521 Fix variable name
• bcbfd01 Rename a private marker type from Arbitrary to Adhoc.
• 6cb332b Documentation link fixes.
• e5b4ea2 Adapt to APIs changes in zcash_spec.
• c7442d7 Support tagged ZIP 32 child derivation for application protocols specified
• Additional commits viewable in compare view

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