[build_usd.py] Minor updates to zlib build options #4

Job	Run time
Linux (cp38, /opt/python/cp38-cp38/bin/python, 3.8)	25m 44s
macOS (3.8, python3.8, cp38)	1m 42s
Linux (cp39, /opt/python/cp39-cp39/bin/python, 3.9)	25m 55s
macOS (3.9, python3.9, cp39)	1m 42s
Linux (cp310, /opt/python/cp310-cp310/bin/python, 3.10)	25m 54s
Windows (3.8, cp38)	27m 56s
Linux (cp311, /opt/python/cp311-cp311/bin/python, 3.11)	25m 54s
macOS (3.10, python3.10, cp310)	1m 46s
Windows (3.9, cp39)	28m 7s
Linux (cp312, /opt/python/cp312-cp312/bin/python, 3.12)	25m 49s
macOS (3.11, python3.11, cp311)	1m 24s
Windows (3.10, cp310)	28m 4s
macOS (3.12, python3.12, cp312)	1m 40s
Windows (3.11, cp311)	27m 51s
Windows (3.12, cp312)	28m 24s
CollectPackages	10s
Test	0s
	4h 38m 2s

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