Update python-uamqp to version 1.6.4 / rev 19 via SR 1066296
https://build.opensuse.org/request/show/1066296
by user StevenK + dimstar_suse
- Update to 1.6.4:
* Updated OpenSSL dependency to 1.1.1t
* Updated submodules to support OpenSSL 3.0 compilation
* Removed dependency on six
* Fixed a bug that caused the wrong port to selected for websockets
when a port was not passed in