feat(performance): performance optimizations EE-6042 (#10520)

pkg/libhttp/request/payload.go

@@ -1,10 +1,10 @@
 package request
 
 import (
-	"encoding/json"
 	"net/http"
 
 	"github.com/pkg/errors"
+	"github.com/segmentio/encoding/json"
 )
 
 // PayloadValidation is an interface used to validate the payload of a request.

pkg/libhttp/request/payload_test.go

@@ -2,13 +2,13 @@ package request_test
 
 import (
 	"bytes"
-	"encoding/json"
 	"net/http"
 	"net/http/httptest"
 	"testing"
 
 	"github.com/portainer/portainer/pkg/libhttp/request"
 
+	"github.com/segmentio/encoding/json"
 	"github.com/stretchr/testify/assert"
 )
 

pkg/libhttp/request/request.go

@@ -4,13 +4,13 @@
 package request
 
 import (
-	"encoding/json"
 	"errors"
 	"io/ioutil"
 	"net/http"
 	"strconv"
 
 	"github.com/gorilla/mux"
+	"github.com/segmentio/encoding/json"
 )
 
 const (