Update float-cmp requirement from >=0.6, < 0.9 to >=0.6, < 0.10

Updates the requirements on [float-cmp](https://github.com/mikedilger/float-cmp) to permit the latest version.
- [Release notes](https://github.com/mikedilger/float-cmp/releases)
- [Commits](https://github.com/mikedilger/float-cmp/commits)

---
updated-dependencies:
- dependency-name: float-cmp
  dependency-type: direct:production
...

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

Cargo.toml

@@ -34,7 +34,7 @@ nalgebra = { version = ">=0.21, <0.28", optional = true }
 serde =  { version = "1", features = ["derive"], optional = true }
 
 [dev-dependencies]
-float-cmp = ">=0.6, < 0.9"
+float-cmp = ">=0.6, < 0.10"
 serde_json = "1"
 
 [package.metadata.docs.rs]