build(deps): bump hpke from 0.11.0 to 0.12.0

[dependabot[bot]]

Bumps hpke from 0.11.0 to 0.12.0.

Changelog

Sourced from hpke's changelog.

[0.12.0] - 2024-07-03

Additions

• Added Serializable::write_exact so serialization requires less stack space
• Added support for the P-521 curve

Changes

• Constrained Aead::AeadImpl to be Send + Sync
• Bumped subtle dependency and removed byteorder dependency

Removals

• Removed all impls of serde::{Serialize, Deserailize} from crate. See wiki for migration instructions.

Commits

• See full diff in compare view

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