Bump github.com/prometheus/client_golang in /samples/http

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 0.9.2 to 1.11.1.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_golang@v0.9.2...v1.11.1)

---
updated-dependencies:
- dependency-name: github.com/prometheus/client_golang
  dependency-type: indirect
...

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

samples/http/go.mod

@@ -21,25 +21,26 @@ require (
 )
 
 require (
-	github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.1 // indirect
 	github.com/felixge/httpsnoop v1.0.2 // indirect
 	github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6 // indirect
 	github.com/golang/protobuf v1.5.0 // indirect
-	github.com/json-iterator/go v1.1.10 // indirect
+	github.com/json-iterator/go v1.1.11 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421 // indirect
-	github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742 // indirect
-	github.com/prometheus/client_golang v0.9.2 // indirect
-	github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 // indirect
-	github.com/prometheus/common v0.0.0-20181126121408-4724e9255275 // indirect
-	github.com/prometheus/procfs v0.0.0-20181204211112-1dc9a6cbc91a // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.1 // indirect
+	github.com/prometheus/client_golang v1.11.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.26.0 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
 	go.opentelemetry.io/contrib v0.23.0 // indirect
 	go.opentelemetry.io/otel/internal/metric v0.23.0 // indirect
 	go.opentelemetry.io/otel/metric v0.23.0 // indirect
 	go.uber.org/atomic v1.4.0 // indirect
 	go.uber.org/multierr v1.1.0 // indirect
 	go.uber.org/zap v1.10.0 // indirect
-	golang.org/x/sys v0.0.0-20210423185535-09eb48e85fd7 // indirect
+	golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40 // indirect
 	golang.org/x/text v0.3.3 // indirect
 	google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb // indirect
 	google.golang.org/grpc v1.20.1 // indirect