Update python-websockets to version 9.1 / rev 13 via SR 911402
https://build.opensuse.org/request/show/911402
by user mcepl + RBrownSUSE
- Increase WEBSOCKETS_TESTS_TIMEOUT_FACTOR to 10 to make
test_keepalive_ping_with_no_ping_timeout pass again.
- Remove skip-test_keepalive_ping_with_no_ping_timeout.patch, of course.
- Use %pyunittest macro instead of doing it on our own.
- Add skip-test_keepalive_ping_with_no_ping_timeout.patch for
gh#aaugustin/websockets#1026.