Upgrading JMC Core API version

When uploading a recording to datasource, there is a warning:

```bash
2022-09-27 20:55:34,471 WARNING [org.ope.jmc.fli.int.par.v1.ValueReaders$ReflectiveReader] (pool-6-thread-1) Could not find field with name 'hidden' in reader for 'class'
```

I think upgrading jmc core version to `8.1.0` or higher would solve this issue as here?

https://bugs.openjdk.org/browse/JMC-7164