chore(deps): update dashmap requirement from 5 to 6

Updates the requirements on [dashmap](https://github.com/xacrimon/dashmap) to permit the latest version.
- [Release notes](https://github.com/xacrimon/dashmap/releases)
- [Commits](xacrimon/dashmap@v5.0.0...v6.0.1)

---
updated-dependencies:
- dependency-name: dashmap
  dependency-type: direct:production
...

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

crates/core/Cargo.toml

@@ -73,7 +73,7 @@ tokio = { workspace = true, features = [
 
 # other deps (these should be organized and pulled into workspace.dependencies as necessary)
 cfg-if = "1"
-dashmap = "5"
+dashmap = "6"
 errno = "0.3"
 either = "1.8"
 fix-hidden-lifetime-bug = "0.2"