Bump prometheus/client_golang to v1.13.0

vendor/github.com/prometheus/procfs/internal/util/readfile.go

@@ -15,17 +15,16 @@ package util
 
 import (
 	"io"
-	"io/ioutil"
 	"os"
 )
 
-// ReadFileNoStat uses ioutil.ReadAll to read contents of entire file.
-// This is similar to ioutil.ReadFile but without the call to os.Stat, because
+// ReadFileNoStat uses io.ReadAll to read contents of entire file.
+// This is similar to os.ReadFile but without the call to os.Stat, because
 // many files in /proc and /sys report incorrect file sizes (either 0 or 4096).
-// Reads a max file size of 512kB.  For files larger than this, a scanner
+// Reads a max file size of 1024kB.  For files larger than this, a scanner
 // should be used.
 func ReadFileNoStat(filename string) ([]byte, error) {
-	const maxBufferSize = 1024 * 512
+	const maxBufferSize = 1024 * 1024
 
 	f, err := os.Open(filename)
 	if err != nil {
@@ -34,5 +33,5 @@ func ReadFileNoStat(filename string) ([]byte, error) {
 	defer f.Close()
 
 	reader := io.LimitReader(f, maxBufferSize)
-	return ioutil.ReadAll(reader)
+	return io.ReadAll(reader)
 }