[influxdb] Usage of SaaS cloud instance not supported

[PLeusmann]

Expected Behavior

Using the Influxdata InfluxDB Cloud Serverless and InfluxDB Open Source as a persistance backends should be possible.

Current Behavior

Exception is thrown during connection setup.

[db.client.internal.InfluxDBClientImpl] - The exception occurs during check instance readiness
com.influxdb.exceptions.InfluxException: Use JsonReader.setLenient(true) to accept malformed JSON at line 1 column 1 path $

Possible Solution

Do not use InfluxDBClient.ready() (and InfluxDBClient.health()) as these endpoints are not available in the cloud variant. see influxdata/influxdb#19357
Instead use InfluxDBClient.ping()available in client versions 4.0.0+ influxdata/openapi#140, influxdata/influxdb-client-java#272