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>

models/webhook_test.go

@@ -6,12 +6,12 @@ package models
 
 import (
 	"context"
-	"encoding/json"
 	"testing"
 	"time"
 
 	api "code.gitea.io/gitea/modules/structs"
 
+	jsoniter "github.com/json-iterator/go"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -58,6 +58,7 @@ func TestWebhook_UpdateEvent(t *testing.T) {
 	assert.NoError(t, webhook.UpdateEvent())
 	assert.NotEmpty(t, webhook.Events)
 	actualHookEvent := &HookEvent{}
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	assert.NoError(t, json.Unmarshal([]byte(webhook.Events), actualHookEvent))
 	assert.Equal(t, *hookEvent, *actualHookEvent)
 }