Pyas2lib

* fix: update the black version to fix github ci pipeline
* feat: added partner setting to force canonicalize binary
* fix: freeze the version of pyflakes to resolve klen/pylama224
* feat: update the versions of oscrypt and asn1crypto
* fix: Use SMIMECapabilites from asn1crypto instead of the custom class (needed due to asn1crypto upgrade)

* fix: freezing pylama version to avoid breaking changes
* feat: option to pass custom domain for AS2 message-id generation

* Handle the case where non utf-8 characters are present in the certificate
* Add support for python 3.10
* Move to GitHub actions for running automated tests
* Fix broken tests due to expired certs (39)
* Preserve content headers on enveloped data (36)
* When address-type is not specified, only use provided value (34)
* Normalize digest algorithm to make it more compatible (32)

* Update the versions of asn1crypto, oscrypto and pyOpenSSL

* Use `signature_algo` attribute when detecting the signature algorithm
* Raise exception when unknown `digest_alg` is passed to the sign function
* Add proper support for handling binary messages
* Look for `Final-Recipient` if `Original-Recipient` is not present in the MDN
* Remove support for python 3.6
* Fix linting and change the linter to pylava

* Use correct format for setting dataclasses requirement for python 3.6