chore(deps): bump dashmap from 5.4.0 to 5.5.3 (#75)

Bumps [dashmap](https://github.com/xacrimon/dashmap) from 5.4.0 to 5.5.3.
- [Release notes](https://github.com/xacrimon/dashmap/releases)
- [Commits](xacrimon/dashmap@v5.4.0...v.5.5.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -24,7 +24,7 @@ realtime = ["socketio-rs"]
 [dependencies]
 anyhow = "1.0"
 byteorder = "1"
-dashmap = "5.4"
+dashmap = "5.5"
 headers = "0.3"
 http = "0.2"
 lazy_static = "1.4"