fix: windows can not deploy folder with "/"

[exiahuang]

What does this PR do?

What issues does this PR fix or reference?

I can not deploy ReportFolder/DashBoard with "/" on windows , but work on linux or macos.
It works on windows/linux/macos without "/".

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>foo/</members>
        <members>foo/FooReport1</members>
        <members>foo/FooReport2</members>
        <name>Report</name>
    </types>
    <version>60.0</version>
</Package>

Functionality Before

Functionality After