Python 3.11 named tuple behavior change

[dbluhm]

It would seem that in python 3.11, named tuples aren't behaving exactly the same way as before. I am getting the following error when attempting to pack a message:

alg = <AuthCryptAlg.A256CBC_HS512_ECDH_1PU_A256KW: ('ECDH-1PU+A256KW', 'A256CBC-HS512')>

    def _build_header(to: List[Key], frm: Key, alg: AuthCryptAlg):
        skid = frm.kid
        kids = [to_key.kid for to_key in to]

        apu = to_unicode(urlsafe_b64encode(to_bytes(skid)))
        apv = calculate_apv(kids)
        protected = {
            "typ": DIDCommMessageTypes.ENCRYPTED.value,
>           "alg": alg.value.alg,
            "enc": alg.value.enc,
            "apu": apu,
            "apv": apv,
            "skid": skid,
        }
E       AttributeError: 'tuple' object has no attribute 'alg'

.venv/lib/python3.11/site-packages/didcomm/core/authcrypt.py:129: AttributeError

[dkulic]

This was a python regression which is fixed in 3.11.2: python/cpython#100098
I tested with this python interpreter and confirmed that it is working without issues.

Closing the ticket.