build(deps): bump github.com/prometheus/client_golang

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](prometheus/client_golang@v1.4.0...v1.4.1)

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

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/go-redis/redis/v7 v7.0.0-beta.6
 	github.com/golang/mock v1.4.0
 	github.com/kr/pretty v0.1.0 // indirect
-	github.com/prometheus/client_golang v1.4.0
+	github.com/prometheus/client_golang v1.4.1
 	github.com/stretchr/testify v1.4.0
 	github.com/vmihailenco/msgpack v4.0.4+incompatible
 	golang.org/x/net v0.0.0-20190724013045-ca1201d0de80 // indirect

go.sum

@@ -94,6 +94,8 @@ github.com/prometheus/client_golang v1.3.0 h1:miYCvYqFXtl/J9FIy8eNpBfYthAEFg+Ys0
 github.com/prometheus/client_golang v1.3.0/go.mod h1:hJaj2vgQTGQmVCsAACORcieXFeDPbaTKGT+JTgUa3og=
 github.com/prometheus/client_golang v1.4.0 h1:YVIb/fVcOTMSqtqZWSKnHpSLBxu8DKgxq8z6RuBZwqI=
 github.com/prometheus/client_golang v1.4.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
+github.com/prometheus/client_golang v1.4.1 h1:FFSuS004yOQEtDdTq+TAOLP5xUq63KqAFYyOi8zA+Y8=
+github.com/prometheus/client_golang v1.4.1/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90 h1:S/YWwWx/RA8rT8tKFRuGUZhuA90OyIBpPCXkcbwU8DE=
 github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=