Bump flo_curves from 0.6.0 to 0.7.0

Bumps [flo_curves](https://github.com/Logicalshift/flo_curves) from 0.6.0 to 0.7.0.
- [Release notes](https://github.com/Logicalshift/flo_curves/releases)
- [Commits](Logicalshift/flo_curves@0.6.0...0.7.0)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -114,7 +114,7 @@ strum = { version = "0.23", features = ["derive"] }
 image = { version = "0.23", features = ["png"], default-features = false }
 
 # for certain Bézier curve manipulation functions
-flo_curves = "0.6"
+flo_curves = "0.7"
 
 # for exporting UFO .glif files to layers
 plist = "1.3"