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>

vendor/gitea.com/go-chi/binding/binding.go

@@ -18,7 +18,6 @@
 package binding
 
 import (
-	"encoding/json"
 	"fmt"
 	"io"
 	"mime/multipart"
@@ -30,6 +29,7 @@ import (
 	"strings"
 	"unicode/utf8"
 
+	jsoniter "github.com/json-iterator/go"
 	"github.com/unknwon/com"
 )
 
@@ -89,6 +89,7 @@ func errorHandler(errs Errors, rw http.ResponseWriter) {
 		} else {
 			rw.WriteHeader(STATUS_UNPROCESSABLE_ENTITY)
 		}
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		errOutput, _ := json.Marshal(errs)
 		rw.Write(errOutput)
 		return
@@ -171,6 +172,7 @@ func JSON(req *http.Request, jsonStruct interface{}) Errors {
 
 	if req.Body != nil {
 		defer req.Body.Close()
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		err := json.NewDecoder(req.Body).Decode(jsonStruct)
 		if err != nil && err != io.EOF {
 			errors.Add([]string{}, ERR_DESERIALIZATION, err.Error())