[Satosa][Jwt] Add support for brainpool family curves

According to [italian documentation](https://italia.github.io/eudi-wallet-it-docs/versione-corrente/en/algorithms.html), the brainpool family of elliptic curves MUIST be supported.
Currently, we rely on the library cryptojwt for matters concerning jwt verification. Unless I am missing something, cryptiojwt does not support brainpool curves. I tested this hypotesis with the following code snippet, which throws an `UnsupportedAlgorithm` exception on the last statement. The curve parameters are not random and were generated using library chilkat.

```
import json
from cryptojwt.jwk.jwk import key_from_jwk_dict

raw = '{"kty":"EC","crv":"brainpoolp256r1","x":"ksK-gc89KSL-7JtWib3mEQr6kgRoreH7Ez2DBfoUTSc","y":"VYb7e6mOg79CaBi2lNEK7dIhrkbU1usBM-DU8uGMXsE","d":"E21xgTxmXD0wbgdXz4C3nwlb4mZxl5vBNkvrQQT8rDY"}'
d = json.loads(raw)

key = key_from_jwk_dict(d)
```

I am not sure where this issue sits across milestone. Solution might be nontrivial as it implies reviewing project dependencies and how they are wrapped.