feat: upgrade to v4 #969

Job	Run time
build (amd64)	1m 5s
cleanup-runs	6s
install-tparse	20s
split-test-files	18s
test-upgrade-name	9s
test-integration (00)	1m 29s
test-integration-multi-node (00)	1m 38s
test-integration (01)	5m 27s
tests (00)	1m 36s
test-integration-multi-node (01)	2m 56s
test-integration (02)	1m 24s
tests (01)	1m 32s
test-integration (03)	1m 39s
test-integration-multi-node (02)	1m 29s
tests (02)	1m 29s
test-integration-multi-node (03)	1m 36s
tests (03)	1m 27s
upload-coverage-report	9s
test-localnet-blocks	3m 9s
test_integration_multi_node_report	10s
test-integration-report	17s
	29m 25s

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