🚀 Feature: OCPP 2.1 support

### 🔖 Feature description

Add support for OCPP 2.1 when available in the OCPP library.

### 🎤 Why is this feature needed ?

To be up to date.

### ✌️ How do you aim to achieve this?

/

### 🔄️ Additional Information

_No response_

### 👀 Have you spent some time to check if this feature request has been raised before?

- [x] I checked and didn't find similar issue