Build(deps): bump github.com/alecthomas/kong from 0.4.1 to 0.5.0

Bumps [github.com/alecthomas/kong](https://github.com/alecthomas/kong) from 0.4.1 to 0.5.0.
- [Release notes](https://github.com/alecthomas/kong/releases)
- [Commits](https://github.com/alecthomas/kong/compare/v0.4.1...v0.5.0)

go.mod

@@ -3,7 +3,7 @@ module gitlab.com/unboundsoftware/s3uploader
 go 1.17
 
 require (
-	github.com/alecthomas/kong v0.4.1
+	github.com/alecthomas/kong v0.5.0
 	github.com/apex/log v1.9.0
 	github.com/aws/aws-sdk-go v1.43.6
 	github.com/stretchr/testify v1.7.0