Update to new cadvisor v0.48.1

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/google/cadvisor/client/v2/client.go

@@ -19,7 +19,7 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"path"
@@ -147,7 +147,7 @@ func (c *Client) httpGetResponse(postData interface{}, urlPath, infoName string)
 		return nil, fmt.Errorf("received empty response for %q from %q", infoName, urlPath)
 	}
 	defer resp.Body.Close()
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		err = fmt.Errorf("unable to read all %q from %q: %v", infoName, urlPath, err)
 		return nil, err