add vendoring

vendor/golang.org/x/sys/execabs/execabs_go118.go

@@ -0,0 +1,12 @@
+// Copyright 2022 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.
+
+//go:build !go1.19
+// +build !go1.19
+
+package execabs
+
+func isGo119ErrDot(err error) bool {
+	return false
+}