Revert transaction_version to 18 (#1941) #681

Job	Run time
Check vars and secrets / Check available vars and secrets	1s
Get aleph-node and chain-bootstrapper fqdn paths	59s
Build chain-bootstrapper / Build chain-bootstrapper (production=true)	7m 31s
Build and push cliain / Build or check cliain binary	3m 18s
Build production aleph-node / Build aleph-node (production=true)	10m 42s
Build production runtime / Build	5m 40s
Build and push cliain / Build and push cliain docker image to ecr	0s
check-runtime-determinism / Check runtime build determinism	5m 44s
Push chain-bootstrapper docker image to ECR / Push chain-bootstrapper docker image to the ECR	36s
Store production node and runtime in Mainnet bucket	22s
Push production node docker image to ECR / Push aleph-node docker image to the ECR	26s
Send Slack notification about workflow status	10s
Send Slack notification about workflow status	0s
	35m 29s

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