Bump approx from 0.3.2 to 0.4.0

Bumps [approx](https://github.com/brendanzab/approx) from 0.3.2 to 0.4.0.
- [Release notes](https://github.com/brendanzab/approx/releases)
- [Commits](https://github.com/brendanzab/approx/commits)

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

Cargo.lock

@@ -11,9 +11,9 @@ dependencies = [
 
 [[package]]
 name = "approx"
-version = "0.3.2"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0e60b75072ecd4168020818c0107f2857bb6c4e64252d8d3983f6263b40a5c3"
+checksum = "3f2a05fd1bd10b2527e20a2cd32d8873d115b8b39fe219ee25f42a8aca6ba278"
 dependencies = [
  "num-traits",
 ]

Cargo.toml

@@ -35,7 +35,7 @@ default-features = false
 features = ["suggestions", "color", "wrap_help"]
 
 [dev-dependencies]
-approx = "0.3"
+approx = "0.4"
 
 [build-dependencies]
 clap = "2"