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Auto merge of #140535 - dtolnay:hashbrown, r=tgross35
Update hashbrown dependency to unblock ExtractIf improvements
Release notes: https://github.com/rust-lang/hashbrown/releases/tag/v0.15.3
Relevant to me, this release includes https://github.com/rust-lang/hashbrown/pull/616 which unblocks https://github.com/rust-lang/rust/pull/139764.
