Bump approx from 0.4.0 to 0.5.1 (#18)

* Bump approx from 0.4.0 to 0.5.1

Bumps [approx](https://github.com/brendanzab/approx) from 0.4.0 to 0.5.1.
- [Commits](brendanzab/approx@v0.4.0...v0.5.1)

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

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

* Update dependencies

---------

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

Author: dependabot[bot]

Cargo.lock

@@ -21,7 +21,7 @@ rand_distr = "0.5.1"
 statrs = "0.18.0"
 
 [dev-dependencies]
-approx = "0.4"
+approx = "0.5.1"
 
 [lints.rust.unexpected_cfgs]
 level = "warn"