Cannot oscli send -> oscli dump without raising exception

**Describe the bug**
I cannot use `oscli` to send and dump a package without the server raising an exception.

**To Reproduce**

In one shell

```sh
oscli dump
```

in another

```sh
oscli send 127.0.0.1
```

You will receive an exception

```
ValueError: packet is not a message or a bundle
```

**Expected behavior**
The packet should be readable

**Platform (please complete the following information):**
- OS: Arch Linux Latest
- Python 3.10.5
- oscpy 0.6.0 from PyPI

Reproduce the issue with `oscli dump` in one shell and `oscli send 127.0.0.1` in another on Python 3.10.5. Start at the `oscli` send/dump entry points and trace the packet validation that raises `ValueError`; done means the packet is readable without the server raising an exception.

Written by the indexing model from the issue text.