Update dependencies

vendor/github.com/alexbrainman/sspi/mksyscall.go

@@ -0,0 +1,7 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package sspi
+
+//go:generate go run $GOROOT/src/syscall/mksyscall_windows.go -systemdll=false -output=zsyscall_windows.go syscall.go