chore(deps): update kd-tree requirement from 0.5 to 0.6 (#103)

Updates the requirements on [kd-tree](https://github.com/u1roh/kd-tree) to permit the latest version.
- [Release notes](https://github.com/u1roh/kd-tree/releases)
- [Commits](u1roh/kd-tree@v0.5.0...v0.6.0)

---
updated-dependencies:
- dependency-name: kd-tree
  dependency-type: direct:production
...

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

Cargo.toml

@@ -146,7 +146,7 @@ flate2  = { version = "1.0", optional = true }
 flexbuffers = { version = "2.0", optional = true }
 half = { version = "2.3.1", optional = true, features = ["serde"] }
 image = { version = "0.25.0", default-features = false, features = ["png"] }
-kd-tree = { version = "0.5", optional = true }
+kd-tree = { version = "0.6", optional = true }
 noise = { version = "0.9.0", optional = true }
 ply-rs = { version = "0.1", optional = true }
 rand = "0.8"