Connecting to Copilot bot seems broken since 25.01.25

Since roughly 25.01.25 the connection to any Copilot Studio seems broken for the connector, resulting in a "Connectivity check FAILED" when running "botium-cli hello", starting any test will result in "The bot did not respond within 10sec [...]".

Previously the same connection file ran without issues. With a manual curl http request the bot is answering, so the endpoint secret should be correct.

I run this botium.json config file:

```
{
"botium": {
"Capabilities": {
"PROJECTNAME": "My_name",
"CONTAINERMODE": "copilot",
"COPILOT_SECRET": "My_secret",
"COPILOT_DOMAIN": "https://europe.copilot.microsoft.com",
"SCRIPTING_TIMEOUT": 40000,
"SCRIPTING_NORMALIZE_TEXT": true
},
"Sources": {},
"Envs": {}
}
}
```
I tried with not specifing the endpoint also (which previously worked fine) but to the same result.