refactor: use DI.jl for the jacobian stuff #63

Job	Run time
test (Core, min, ubuntu-latest)	14m 19s
test (Core, min, macos-latest)	14m 14s
test (Core, min, windows-latest)	14m 12s
test (Core, 1, ubuntu-latest)	14m 20s
test (Core, 1, macos-latest)	14m 16s
test (Core, 1, windows-latest)	14m 11s
test (Downstream, min, ubuntu-latest)	10m 44s
test (Downstream, min, macos-latest)	6m 55s
test (Downstream, min, windows-latest)	14m 12s
test (Downstream, 1, ubuntu-latest)	9m 33s
test (Downstream, 1, macos-latest)	6m 8s
test (Downstream, 1, windows-latest)	13m 50s
test (Misc, min, ubuntu-latest)	13m 30s
test (Misc, min, macos-latest)	7m 59s
test (Misc, min, windows-latest)	14m 6s
test (Misc, 1, ubuntu-latest)	13m 2s
test (Misc, 1, macos-latest)	9m 25s
test (Misc, 1, windows-latest)	14m 10s
test (Wrappers, min, ubuntu-latest)	12m 47s
test (Wrappers, min, macos-latest)	1s
test (Wrappers, min, windows-latest)	14m 0s
test (Wrappers, 1, ubuntu-latest)	10m 44s
test (Wrappers, 1, macos-latest)	2m 36s
test (Wrappers, 1, windows-latest)	13m 33s
	4h 32m 47s

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