Amazon Cognito with Logstash

I setup AWS Elasticsearch with Cognito as the IDP and i can log into Kibana without any issues. However, when I use logstash elasticsearch output using a user from the pool, I get

[2020-07-30T18:22:13,586][WARN ][logstash.outputs.elasticsearch][main] Attempted to resurrect connection to dead ES instance, but got an error. 
{:url=>"https://someuser:xxxxxx@blah-blah-host.someregion.es.amazonaws.com:443/", :error_type=>LogStash::Outputs::ElasticSearch::HttpClient::Pool::BadResponseCodeError, :error=>"Got response code '401' contacting Elasticsearch at URL 'https://blah-blah-host.someregion.es.amazonaws.com:443/'"}

I also cannot use basic auth. It returns

401 Authentication finally failed

How can i use credentials from Cognito in logstash to authenticate and output to elastic search?
Or, perhaps, is there another way to accomplish this?

My config:

input {
    file {
        path => "/path/to/log/*.log"
        start_position => "beginning"
        sincedb_path => "/path/to/sincedb"
    }
}

output {
    elasticsearch {
        hosts => ["https://blah-blah-host.someregion.es.amazonaws.com:443"]
        user => "someuser"
        password => "S0m3P@$$w0rd"
        index => "very-important-logs"
    }
}