JiraConnect: sync-deployments: no implicit conversion of String into Integer

https://sentry.gitlab.net/gitlab/gitlabcom/issues/2446909/?referrer=gitlab_plugin

TypeError: no implicit conversion of String into Integer
  httparty/response.rb:120:in `[]'
    parsed_response.send(name, *args, &block)
  httparty/response.rb:120:in `method_missing'
    parsed_response.send(name, *args, &block)
  jira_connect/sync_service.rb:34:in `log_response'
    if response && (response['errorMessages'] || response['rejectedBuilds'].present?)
  gitlab/metrics/instrumentation.rb:162:in `log_response'
    super
  jira_connect/sync_service.rb:17:in `block (2 levels) in execute'
    responses.each { |r| log_response(r) }
...
(85 additional frame(s) were not displayed)

no implicit conversion of String into Integer