Replace ioutil with io instead

Author: waybackarchiver

ia.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"net/http"
 	"net/url"
 	"os"
@@ -133,7 +133,7 @@ func (wbrc *Archiver) latest(_ context.Context, u *url.URL) (string, error) {
 	}
 	defer resp.Body.Close()
 
-	data, err := ioutil.ReadAll(resp.Body)
+	data, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return "", err
 	}