Move errdefs to pkg/errdefs

Signed-off-by: Derek McGowan <derek@mcg.dev>

integration/containerd_image_test.go

@@ -26,10 +26,10 @@ import (
 	"time"
 
 	containerd "github.com/containerd/containerd/v2/client"
-	"github.com/containerd/containerd/v2/errdefs"
 	"github.com/containerd/containerd/v2/integration/images"
 	"github.com/containerd/containerd/v2/namespaces"
 	"github.com/containerd/containerd/v2/pkg/cri/labels"
+	"github.com/containerd/containerd/v2/pkg/errdefs"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	runtime "k8s.io/cri-api/pkg/apis/runtime/v1"