Add cargo section for dependabot #1789

Job	Run time
Wheel on macos-12 py-3.8	2m 36s
Checks	38s
Wheel on ubuntu-latest py-3.8	2m 31s
Run fuzz targets (macos-12, 3.8)	20m 40s
Wheel on windows-latest py-3.8	2m 1s
Run fuzz targets (ubuntu-latest, 3.8)	15m 36s
coverage	8m 1s
Unit tests (macos-12, 3.8)	5m 21s
Unit tests (ubuntu-latest, 3.8)	3m 30s
Unit tests (windows-latest, 3.8)	5m 33s
Upload to PyPI	20s
	1h 6m 47s

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