Update dependencies

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

@@ -1,4 +1,4 @@
-// Copyright 2020 The Prometheus Authors
+// Copyright The Prometheus Authors
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
@@ -24,7 +24,7 @@ import (
 )
 
 // Cgroup models one line from /proc/[pid]/cgroup. Each Cgroup struct describes the placement of a PID inside a
-// specific control hierarchy. The kernel has two cgroup APIs, v1 and v2. v1 has one hierarchy per available resource
+// specific control hierarchy. The kernel has two cgroup APIs, v1 and v2. The v1 has one hierarchy per available resource
 // controller, while v2 has one unified hierarchy shared by all controllers. Regardless of v1 or v2, all hierarchies
 // contain all running processes, so the question answerable with a Cgroup struct is 'where is this process in
 // this hierarchy' (where==what path on the specific cgroupfs). By prefixing this path with the mount point of
@@ -51,7 +51,7 @@ func parseCgroupString(cgroupStr string) (*Cgroup, error) {
 
 	fields := strings.SplitN(cgroupStr, ":", 3)
 	if len(fields) < 3 {
-		return nil, fmt.Errorf("at least 3 fields required, found %d fields in cgroup string: %s", len(fields), cgroupStr)
+		return nil, fmt.Errorf("%w: 3+ fields required, found %d fields in cgroup string: %s", ErrFileParse, len(fields), cgroupStr)
 	}
 
 	cgroup := &Cgroup{
@@ -60,7 +60,7 @@ func parseCgroupString(cgroupStr string) (*Cgroup, error) {
 	}
 	cgroup.HierarchyID, err = strconv.Atoi(fields[0])
 	if err != nil {
-		return nil, fmt.Errorf("failed to parse hierarchy ID")
+		return nil, fmt.Errorf("%w: hierarchy ID: %q", ErrFileParse, cgroup.HierarchyID)
 	}
 	if fields[1] != "" {
 		ssNames := strings.Split(fields[1], ",")