Bump github.com/prometheus/client_golang from 1.14.0 to 1.18.0

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.14.0 to 1.18.0.
- [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...v1.18.0)

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

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

go.mod

@@ -5,7 +5,7 @@ go 1.12
 
 require (
 	github.com/gophercloud/gophercloud v1.8.0
-	github.com/prometheus/client_golang v1.14.0
+	github.com/prometheus/client_golang v1.18.0
 	gopkg.in/ini.v1 v1.67.0
 	k8s.io/api v0.27.10
 	k8s.io/apimachinery v0.27.10