Bump github.com/prometheus/client_golang from 1.4.1 to 1.5.0 (#206)

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/master/CHANGELOG.md)
- [Commits](prometheus/client_golang@v1.4.1...v1.5.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/heptiolabs/healthcheck v0.0.0-20180807145615-6ff867650f40
 	github.com/imdario/mergo v0.3.6 // indirect
 	github.com/mailru/easyjson v0.7.0 // indirect
-	github.com/prometheus/client_golang v1.4.1
+	github.com/prometheus/client_golang v1.5.0
 	github.com/prometheus/procfs v0.0.10 // indirect
 	github.com/sirupsen/logrus v1.4.2
 	github.com/stretchr/testify v1.5.1

go.sum

@@ -196,6 +196,8 @@ github.com/prometheus/client_golang v1.0.0 h1:vrDKnkGzuGvhNAL56c7DBz29ZL+KxnoR0x
 github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
 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_golang v1.5.0 h1:Ctq0iGpCmr3jeP77kbF2UxgvRwzWWz+4Bh9/vJTyg1A=
+github.com/prometheus/client_golang v1.5.0/go.mod h1:e9GMxYsXl05ICDXkRhurwBS4Q3OK1iX/F2sw+iXX5zU=
 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 h1:idejC8f05m9MGOsuEi1ATq9shN03HrxNkD/luQvxCv8=
 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=