update winrmcp to fix #5752

vendor/github.com/packer-community/winrmcp/winrmcp/cp.go

@@ -176,7 +176,12 @@ func cleanupContent(client *winrm.Client, filePath string) error {
 	}
 
 	defer shell.Close()
-	script := fmt.Sprintf(`Remove-Item %s -ErrorAction SilentlyContinue`, filePath)
+	script := fmt.Sprintf(`
+		$tmp_file_path = [System.IO.Path]::GetFullPath("%s")
+		if (Test-Path $tmp_file_path) {
+			Remove-Item $tmp_file_path -ErrorAction SilentlyContinue
+		}
+	`, filePath)
 
 	cmd, err := shell.Execute(winrm.Powershell(script))
 	if err != nil {

vendor/vendor.json

@@ -983,10 +983,10 @@
 			"revision": "179d4d0c4d8d407a32af483c2354df1d2c91e6c3"
 		},
 		{
-			"checksumSHA1": "XXmfaQ8fEupEgaGd6PptrLnrE54=",
+			"checksumSHA1": "/NoE6t3UkW4/iKAtbf59GGv6tF8=",
 			"path": "github.com/packer-community/winrmcp/winrmcp",
-			"revision": "e1b7d6e6b1b1a27984270784190f1d06ad91888b",
-			"revisionTime": "2017-09-29T21:51:32Z"
+			"revision": "81144009af586de8e7729b829266f09dd0d59701",
+			"revisionTime": "2018-01-02T16:08:24Z"
 		},
 		{
 			"checksumSHA1": "oaXvjFg802gS/wx1bx2gAQwa7XQ=",