Update Rust crate hashbrown to 0.16.1

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
hashbrown	workspace.dependencies	patch	0.16.0 -> 0.16.1

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Release Notes

rust-lang/hashbrown (hashbrown)

v0.16.1

Compare Source

Added

• Added HashTable methods related to the raw bucket index (#​657)
• Added VacantEntryRef::insert_with_key (#​579)

Changed

• Removed specialization for Copy types (#​662)
• The get_many_mut family of methods have been renamed to get_disjoint_mut
  to match the standard library. The old names are still present for now, but
  deprecated. (#​648)
• Recognize and use over-sized allocations when using custom allocators. (#​523)
• Depend on serde_core instead of serde. (#​649)
• Optimized collect on rayon parallel iterators. (#​652)

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