max Concurrent Requests
Maximum amount of concurrent requests allowed. Further requests will be queued. By default, uses environment variable DEVELOCITY_API_MAX_CONCURRENT_REQUESTS
or 5 (OkHttp's default value of Dispatcher.maxRequestsPerHost).
If set, will set Dispatcher.maxRequests and Dispatcher.maxRequestsPerHost of the internal client, overwriting what's inherited from the base client of clientBuilder, if any.