Bump serde from 1.0.214 to 1.0.215 #1991

Job	Run time
Wheel on macos-13 py-3.8	1m 22s
Checks	51s
Wheel on ubuntu-latest py-3.8	1m 52s
Wheel on windows-latest py-3.8	1m 48s
Run fuzz targets (macos-13, 3.8)	23m 9s
Run fuzz targets (ubuntu-latest, 3.8)	13m 46s
coverage	7m 19s
Unit tests (macos-13, 3.8)	10m 21s
Unit tests (ubuntu-latest, 3.8)	3m 30s
Unit tests (windows-latest, 3.8)	7m 0s
Upload to PyPI	6s
	1h 11m 4s

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