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

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 0.9.4 to 1.19.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_golang@v0.9.4...v1.19.1)

---
updated-dependencies:
- dependency-name: github.com/prometheus/client_golang
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

go.mod

@@ -16,24 +16,20 @@ require (
 	github.com/go-openapi/validate v0.0.0-20180110180619-fa47bbf926a7
 	github.com/go-yaml/yaml v2.1.0+incompatible
 	github.com/golang/gddo v0.0.0-20181116215533-9bd4a3295021
-	github.com/golang/protobuf v1.3.2 // indirect
 	github.com/gorilla/handlers v1.5.2
 	github.com/gorilla/mux v1.8.1
 	github.com/justinas/alice v1.2.0
-	github.com/kr/pretty v0.1.0 // indirect
 	github.com/mailru/easyjson v0.0.0-20171120080333-32fa128f234d // indirect
 	github.com/mitchellh/mapstructure v0.0.0-20171017171808-06020f85339e // indirect
 	github.com/opentracing/opentracing-go v1.2.0
 	github.com/pborman/uuid v1.2.0 // indirect
-	github.com/prometheus/client_golang v0.9.4
+	github.com/prometheus/client_golang v1.19.1
 	github.com/rs/cors v1.11.0
 	github.com/rs/zerolog v1.33.0
 	github.com/stretchr/testify v1.9.0
 	github.com/zenazn/goji v1.0.1
 	golang.org/x/text v0.16.0
-	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
 	gopkg.in/mgo.v2 v2.0.0-20160818020120-3f83fa500528 // indirect
-	gopkg.in/yaml.v2 v2.2.2 // indirect
 )
 
 go 1.12