refactor: move from io/ioutil to io and os packages (#1546)

The io/ioutil package has been deprecated as of Go 1.16, see
https://golang.org/doc/go1.16#ioutil. This commit replaces the existing
io/ioutil functions with their new definitions in io and os packages.

Signed-off-by: Eng Zer Jun <engzerjun@gmail.com>

yp/yp.go

@@ -2,13 +2,12 @@ package yp
 
 import (
 	"bytes"
-	"io/ioutil"
+	"encoding/json"
+	"io"
 	"net/http"
 	"net/url"
 	"time"
 
-	"encoding/json"
-
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/core/data"
 	"github.com/owncast/owncast/models"
@@ -107,7 +106,7 @@ func (yp *YP) ping() {
 	}
 
 	defer resp.Body.Close()
-	body, err := ioutil.ReadAll(resp.Body)
+	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		log.Errorln(err)
 	}