Bump github.com/mattn/go-colorable from 0.1.8 to 0.1.9

Bumps [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable) from 0.1.8 to 0.1.9.
- [Release notes](https://github.com/mattn/go-colorable/releases)
- [Commits](mattn/go-colorable@v0.1.8...v0.1.9)

---
updated-dependencies:
- dependency-name: github.com/mattn/go-colorable
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

go.mod

@@ -3,6 +3,6 @@ module github.com/fatih/color
 go 1.13
 
 require (
-	github.com/mattn/go-colorable v0.1.8
+	github.com/mattn/go-colorable v0.1.9
 	github.com/mattn/go-isatty v0.0.14
 )

go.sum

@@ -1,5 +1,5 @@
-github.com/mattn/go-colorable v0.1.8 h1:c1ghPdyEDarC70ftn0y+A/Ee++9zz8ljHG1b13eJ0s8=
-github.com/mattn/go-colorable v0.1.8/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
+github.com/mattn/go-colorable v0.1.9 h1:sqDoxXbdeALODt0DAeJCVp38ps9ZogZEAXjus69YV3U=
+github.com/mattn/go-colorable v0.1.9/go.mod h1:u6P/XSegPjTcexA+o6vUJrdnUu04hMope9wVRipJSqc=
 github.com/mattn/go-isatty v0.0.12/go.mod h1:cbi8OIDigv2wuxKPP5vlRcQ1OAZbq2CE4Kysco4FUpU=
 github.com/mattn/go-isatty v0.0.14 h1:yVuAays6BHfxijgZPzw+3Zlu5yQgKGP2/hcQbHb7S9Y=
 github.com/mattn/go-isatty v0.0.14/go.mod h1:7GGIvUiUoEMVVmxf/4nioHXj79iQHKdU27kJ6hsGG94=