Bump github.com/gookit/goutil from 0.5.13 to 0.5.15

Bumps [github.com/gookit/goutil](https://github.com/gookit/goutil) from 0.5.13 to 0.5.15.
- [Release notes](https://github.com/gookit/goutil/releases)
- [Commits](gookit/goutil@v0.5.13...v0.5.15)

---
updated-dependencies:
- dependency-name: github.com/gookit/goutil
  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/gookit/i18n
 go 1.16
 
 require (
-	github.com/gookit/goutil v0.5.14
+	github.com/gookit/goutil v0.5.15
 	github.com/gookit/ini/v2 v2.1.3
 )

go.sum

@@ -3,8 +3,9 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/gookit/color v1.5.2 h1:uLnfXcaFjlrDnQDT+NCBcfhrXqYTx/rcCa6xn01Y8yI=
 github.com/gookit/color v1.5.2/go.mod h1:w8h4bGiHeeBpvQVePTutdbERIUf3oJE5lZ8HM0UgXyg=
-github.com/gookit/goutil v0.5.14 h1:8TicCMSkpARD11SpiGJnRzUt2z3CTu+0YAq/zj2Yoag=
 github.com/gookit/goutil v0.5.14/go.mod h1:ozPE16eJS9f89aVbVk05ocEJsia3KPrYUqPTs8GvUTw=
+github.com/gookit/goutil v0.5.15 h1:FaRyj0uVqi7j92QHsG+2Sc1VZ7/7ma77UD3/wBpwyTc=
+github.com/gookit/goutil v0.5.15/go.mod h1:ozPE16eJS9f89aVbVk05ocEJsia3KPrYUqPTs8GvUTw=
 github.com/gookit/ini/v2 v2.1.3 h1:wQPpTWbuo5GuevQnuiZMVRtALfldNuBW0XvRFgF0EEk=
 github.com/gookit/ini/v2 v2.1.3/go.mod h1:Mor4+c0wdx5UK660FBLAkmc6Yr2oBHLAUjydLQ+WgYg=
 github.com/mattn/go-isatty v0.0.16 h1:bq3VjFmv/sOjHtdEhmkEV4x1AJtvUvOJ2PFAZ5+peKQ=