Bump serde from 1.0.204 to 1.0.210 #1922

Job	Run time
Wheel on macos-13 py-3.8	4m 12s
Wheel on ubuntu-latest py-3.8	3m 3s
Wheel on windows-latest py-3.8	2m 45s
Checks	51s
coverage	8m 24s
Run fuzz targets (macos-13, 3.8)	23m 49s
Run fuzz targets (ubuntu-latest, 3.8)	12m 54s
Unit tests (macos-13, 3.8)	5m 54s
Unit tests (ubuntu-latest, 3.8)	3m 43s
Unit tests (windows-latest, 3.8)	5m 26s
Upload to PyPI	26s
	1h 11m 27s

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