Bump github.com/spf13/viper from 1.7.0 to 1.7.1

Bumps [github.com/spf13/viper](https://github.com/spf13/viper) from 1.7.0 to 1.7.1.
- [Release notes](https://github.com/spf13/viper/releases)
- [Commits](spf13/viper@v1.7.0...v1.7.1)

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

Author: dependabot-preview[bot]

go.mod

@@ -25,7 +25,7 @@ require (
 	github.com/sirupsen/logrus v1.6.0 // indirect
 	github.com/spf13/cobra v0.0.7
 	github.com/spf13/pflag v1.0.5
-	github.com/spf13/viper v1.7.0
+	github.com/spf13/viper v1.7.1
 	go.uber.org/atomic v1.5.1 // indirect
 	gocloud.dev v0.20.0
 	golang.org/x/crypto v0.0.0-20200311171314-f7b00557c8c4

go.sum

@@ -599,6 +599,7 @@ github.com/spf13/viper v1.3.2/go.mod h1:ZiWeW+zYFKm7srdB9IoDzzZXaJaI5eL9QjNiN/DM
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
 github.com/spf13/viper v1.7.0 h1:xVKxvI7ouOI5I+U9s2eeiUfMaWBVoXA3AWskkrqK0VM=
 github.com/spf13/viper v1.7.0/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
+github.com/spf13/viper v1.7.1/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=