More fixes for WinGet (tested in a SYSTEM console this time) (#92) #203

Job	Run time
Test StringEnum Trimmed	26s
Timestamp	9s
Build Mac Logging	34s
Build AutoDiscovery	51s
Build macOS UEFS	1m 40s
Build macOS Shim	36s
Build Libraries on macOS	5m 39s
Build Windows Pass 1	8m 2s
Build macOS Pass 1	5m 19s
Build and Test Libraries on Windows	9m 47s
Build Windows Shim	1m 7s
Build Windows UEFS	3m 26s
Build macOS Pass 2	5m 18s
Build Windows Pass 2	8m 21s
Publish to NuGet	47s
Publish UEFS Container	16s
Publish to GitHub	51s
Test Schema Generation	0s
	53m 9s

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