Update dependencies (#5518)

vendor/github.com/nxadm/tail/tail_windows.go

@@ -1,12 +1,19 @@
+// Copyright (c) 2019 FOSS contributors of https://github.com/nxadm/tail
 // +build windows
 
 package tail
 
 import (
-	"github.com/nxadm/tail/winfile"
 	"os"
+
+	"github.com/nxadm/tail/winfile"
 )
 
+// Deprecated: this function is only useful internally and, as such,
+// it will be removed from the API in a future major release.
+//
+// OpenFile proxies a os.Open call for a file so it can be correctly tailed
+// on POSIX and non-POSIX OSes like MS Windows.
 func OpenFile(name string) (file *os.File, err error) {
 	return winfile.OpenFile(name, os.O_RDONLY, 0)
 }