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

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.14.0 to 1.20.2.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](prometheus/client_golang@v1.14.0...v1.20.2)

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

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

go.mod

@@ -3,21 +3,16 @@ module github.com/zmap/zgrab2
 go 1.12
 
 require (
-	github.com/cespare/xxhash/v2 v2.2.0 // indirect
-	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/hdm/jarm-go v0.0.7
-	github.com/prometheus/client_golang v1.14.0
-	github.com/prometheus/common v0.42.0 // indirect
-	github.com/prometheus/procfs v0.9.0 // indirect
+	github.com/prometheus/client_golang v1.20.2
 	github.com/rabbitmq/amqp091-go v1.9.0
 	github.com/sirupsen/logrus v1.9.0
 	github.com/zmap/zcrypto v0.0.0-20230310154051-c8b263fd8300
 	github.com/zmap/zflags v1.4.0-beta.1.0.20200204220219-9d95409821b6
-	golang.org/x/crypto v0.23.0
-	golang.org/x/net v0.25.0
-	golang.org/x/sys v0.20.0
-	golang.org/x/text v0.15.0
-	google.golang.org/protobuf v1.33.0 // indirect
+	golang.org/x/crypto v0.24.0
+	golang.org/x/net v0.26.0
+	golang.org/x/sys v0.22.0
+	golang.org/x/text v0.16.0
 	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c
 	gopkg.in/mgo.v2 v2.0.0-20190816093944-a6b53ec6cb22
 	gopkg.in/yaml.v2 v2.4.0