Migrate to use jsoniter instead of encoding/json (#14841)

* Migrate to use jsoniter

* fix tests

* update gitea.com/go-chi/binding

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: 6543 <6543@obermui.de>

modules/private/serv.go

@@ -5,13 +5,13 @@
 package private
 
 import (
-	"encoding/json"
 	"fmt"
 	"net/http"
 	"net/url"
 
 	"code.gitea.io/gitea/models"
 	"code.gitea.io/gitea/modules/setting"
+	jsoniter "github.com/json-iterator/go"
 )
 
 // KeyAndOwner is the response from ServNoCommand
@@ -34,6 +34,7 @@ func ServNoCommand(keyID int64) (*models.PublicKey, *models.User, error) {
 	}
 
 	var keyAndOwner KeyAndOwner
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err := json.NewDecoder(resp.Body).Decode(&keyAndOwner); err != nil {
 		return nil, nil, err
 	}
@@ -90,6 +91,7 @@ func ServCommand(keyID int64, ownerName, repoName string, mode models.AccessMode
 		return nil, err
 	}
 	defer resp.Body.Close()
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if resp.StatusCode != http.StatusOK {
 		var errServCommand ErrServCommand
 		if err := json.NewDecoder(resp.Body).Decode(&errServCommand); err != nil {