Update datasets and allow randsoc start_idx #1551

Job	Run time
unittest	1m 6s
collect-experiments	3s
run-test (tests/ci/rand_soc.yaml)	18m 22s
run-test (tests/ci/randsoc_dumped.yaml)	17m 30s
run-test (tests/ci/vivado_bit_analysis.yaml)	10m 18s
run-test (tests/ci/vivado_bit_to_netlist.yaml)	15m 57s
run-test (tests/ci/vivado_conformal.yaml)	4m 6s
run-test (tests/ci/vivado_ooc.yaml)	4m 2s
run-test (tests/ci/vivado_phys_netlist.yaml)	14m 39s
run-test (tests/ci/vivado_phys_netlist_cmp.yaml)	9m 12s
run-test (tests/ci/vivado_phys_netlist_error_inject.yaml)	11m 30s
run-test (tests/ci/vivado_wafove.yaml)	7m 20s
run-test (tests/ci/vivado_yosys_impl.yaml)	8m 58s
	2h 3m 3s

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