integrations.go
func (client *Client) UpdateIntegrationSlack(slackIntegration *IntegrationSlackRequest) error {
	return client.doJsonRequest("PUT", "/v1/integration/slack", slackIntegration, nil)
}
func (client *Client) UpdateIntegrationSlack(slackIntegration *IntegrationSlackRequest) error {
	return client.doJsonRequest("PUT", "/v1/integration/slack", slackIntegration, nil)
}
// UpdateIntegrationSlack updates the Slack Integration.
// This will replace the existing values with the new values.