rebase: bump github.com/prometheus/client_golang from 1.11.0 to 1.12.0

Bumps [github.com/prometheus/client_golang](https://github.com/prometheus/client_golang) from 1.11.0 to 1.12.0.
- [Release notes](https://github.com/prometheus/client_golang/releases)
- [Changelog](https://github.com/prometheus/client_golang/blob/main/CHANGELOG.md)
- [Commits](https://github.com/prometheus/client_golang/compare/v1.11.0...v1.12.0)

---
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>

vendor/github.com/prometheus/procfs/proc_cgroup.go

@@ -90,7 +90,7 @@ func parseCgroups(data []byte) ([]Cgroup, error) {
 // control hierarchy running on this system. On every system (v1 and v2), all hierarchies contain all processes,
 // so the len of the returned struct is equal to the number of active hierarchies on this system
 func (p Proc) Cgroups() ([]Cgroup, error) {
-	data, err := util.ReadFileNoStat(fmt.Sprintf("/proc/%d/cgroup", p.PID))
+	data, err := util.ReadFileNoStat(p.path("cgroup"))
 	if err != nil {
 		return nil, err
 	}