chore(docs): use new conf file for OpenAPI version (#1142) #1194

Job	Run time
console / helm-integration-test-console	13m 56s
backend (mgmt-backend) / helm-integration-test	10m 14s
backend (artifact-backend) / helm-integration-test	10m 27s
backend (model-backend) / helm-integration-test	11m 1s
backend (pipeline-backend) / helm-integration-test	10m 28s
	56m 6s

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