build(deps): bump hashbrown from 0.14.5 to 0.15.3

Bumps [hashbrown](https://github.com/rust-lang/hashbrown) from 0.14.5 to 0.15.3.
- [Release notes](https://github.com/rust-lang/hashbrown/releases)
- [Changelog](https://github.com/rust-lang/hashbrown/blob/master/CHANGELOG.md)
- [Commits](rust-lang/hashbrown@v0.14.5...v0.15.3)

---
updated-dependencies:
- dependency-name: hashbrown
  dependency-version: 0.15.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -54,7 +54,7 @@ wrt-sync = { workspace = true, default-features = false } # Make alloc condition
 wrt-platform = { workspace = true, default-features = false, optional = true }
 
 # Only include hashbrown when explicitly requested with alloc feature
-hashbrown = { version = "0.14", optional = true } # For no_std with alloc
+hashbrown = { version = "0.15", optional = true } # For no_std with alloc
 
 # Optional dependencies
 # Logging facade - not enabled by default