chore: release v0.16.1

[github-actions]

🤖 New release

• hashbrown: 0.16.0 -> 0.16.1 (✓ API compatible changes)

Changelog

0.16.1 - 2025-11-19

Other

• Add T to bucket iterators and inline their methods

• Add HashTable::iter_buckets and iter_hash_buckets

• Add HashTable::get_bucket_entry_unchecked

• get_bucket_entry -> Result<OccupiedEntry, AbsentEntry>

• Add get_bucket_unchecked and get_bucket_unchecked_mut

• Make HashTable entries use Tag instead of a full hash

• Rename HashTable::buckets to num_buckets

• Add HashTable methods related to the raw bucket index

• Merge pull request allow providing the key at insertion time for EntryRef #579 from djugei/master

• Clean up doc comment for VacantEntryRef::insert_with_key

• Add insert_with_key, allowing the user to provide the key at insertion time.

• 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.

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This PR was generated with release-plz.

[alex]

a) very neat that this apparently auto creates releases!
b) is there a particular criteria for shipping 0.16.1?