fix: bump etherum-genesis-generator default version to 3.7.0 #1806

Job	Run time
run_with_args (./.github/tests/mev.yaml)	2m 25s
run_with_args (./.github/tests/mev-mock.yaml)	1m 20s
run_with_args (./.github/tests/mix-with-tools.yaml)	5m 3s
assertoor	6m 58s
lint	23s
run_with_args (./.github/tests/mix-persistence.yaml)	3m 21s
run_starlark	1m 0s
run_with_args (./.github/tests/mix-public.yaml)	3m 38s
run_with_args (./.github/tests/minimal.yaml)	2m 9s
run_with_args (./network_params.yaml)	1m 5s
	27m 22s

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