Bump dashmap from 5.5.3 to 6.0.0 (#172)

Bumps [dashmap](https://github.com/xacrimon/dashmap) from 5.5.3 to 6.0.0.
- [Release notes](https://github.com/xacrimon/dashmap/releases)
- [Commits](xacrimon/dashmap@v.5.5.3...v6.0.0)

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

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

Cargo.toml

@@ -8,7 +8,7 @@ edition = "2021"
 anyhow = { version = "1.0.86", features = [] }
 bson = { version = "2.11.0", features = ["uuid-1", "chrono"] }
 clap = { version = "4.5.7", features = ["cargo", "derive", "env", "unicode"] }
-dashmap = "5.5.3"
+dashmap = "6.0.0"
 dropshot = { version = "0.10" }
 futures = "0.3"
 git_rev = "0.1.0"