Move mount to core/mount

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

snapshots/proxy/proxy.go

@@ -21,8 +21,8 @@ import (
 	"io"
 
 	snapshotsapi "github.com/containerd/containerd/v2/api/services/snapshots/v1"
+	"github.com/containerd/containerd/v2/core/mount"
 	"github.com/containerd/containerd/v2/errdefs"
-	"github.com/containerd/containerd/v2/mount"
 	protobuftypes "github.com/containerd/containerd/v2/protobuf/types"
 	"github.com/containerd/containerd/v2/snapshots"
 )