Replace golang.org/x/net/context with std library

Signed-off-by: Shengjing Zhu <zhsj@debian.org>

integration/container_update_resources_test.go

@@ -21,6 +21,7 @@ package integration
 
 import (
 	"bytes"
+	"context"
 	"os"
 	"strings"
 	"testing"
@@ -31,7 +32,6 @@ import (
 	runtimespec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
-	"golang.org/x/net/context"
 	runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
 )