Update hashbrown requirement from 0.11.0 to 0.12.0

[dependabot[bot]]

Updates the requirements on hashbrown to permit the latest version.

Changelog

Sourced from hashbrown's changelog.

[v0.12.0] - 2022-01-17

Added

• Added From<[T; N]> and From<[(K, V); N]> for HashSet and HashMap respectively. (#297)
• Added an allocator() getter to HashMap and HashSet. (#257)
• Added insert_unique_unchecked to HashMap and HashSet. (#293)
• Added into_keys and into_values to HashMap. (#295)
• Implement From<array> on HashSet and HashMap. (#298)
• Added entry_ref API to HashMap. (#201)

Changed

• Bumped minimum Rust version to 1.56.1 and edition to 2021.
• Use u64 for the GroupWord on WebAssembly. (#271)
• Optimized find. (#279)
• Made rehashing and resizing less generic to reduce compilation time. (#282)
• Inlined small functions. (#283)
• Use BuildHasher::hash_one when feature = "nightly" is enabled. (#292)
• Relaxed the bounds on Debug for HashSet. (#296)
• Rename get_each_mut to get_many_mut and align API with the stdlib. (#291)
• Don't hash the key when searching in an empty table. (#305)

Fixed

• Guard against allocations exceeding isize::MAX. (#268)
• Made RawTable::insert_no_grow unsafe. (#254)
• Inline static_empty. (#280)
• Fixed trait bounds on Send/Sync impls. (#303)

[v0.11.2] - 2021-03-25

Fixed

• Added missing allocator type parameter to HashMap's and HashSet's Clone impls. (#252)

[v0.11.1] - 2021-03-20

Fixed

• Added missing pub modifier to BumpWrapper. (#251)

[v0.11.0] - 2021-03-14

Added

• Added safe try_insert_no_grow method to RawTable. (#229)
• Added support for bumpalo as an allocator without the nightly feature. (#231)
• Implemented Default for RawTable. (#237)
• Added new safe methods RawTable::get_each_mut, HashMap::get_each_mut, and HashMap::get_each_key_value_mut. (#239)

... (truncated)

Commits

• f3a242f Version 0.12.0
• 61d70a1 Auto merge of #305 - nnethercote:add-is_empty-checks, r=Amanieu
• dec8e8c Don't hash the key when searching in an empty table.
• 5590aeb Auto merge of #303 - Amanieu:send_sync, r=Amanieu
• 898a9fe Auto merge of #301 - ajtribick:entry_ref, r=Amanieu
• 7c545e1 Add Send, Sync implementations for OccupiedEntryRef
• 05ee33e Disable clippy::missing_safety_doc lint on Allocator trait
• 4cae5d5 Fix trait bounds on Send/Sync impls
• f37c859 Disable clippy::missing_safety_doc lint on Allocator trait
• c40058a Add entry_ref API
• Additional commits viewable in compare view

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[dependabot[bot]]

Looks like hashbrown is up-to-date now, so this is no longer needed.