autobahn: Install the twisted extra for the test run

26.10's autobahn.test imports the twisted framework modules, but the
test environment had no twisted, so test_import_all failed on the
twisted namespace the wheel's own plugins directory leaves behind.

Author: luhenry

.github/workflows/build-autobahn.yml

@@ -85,7 +85,9 @@ jobs:
           # pynacl and argon2-cffi-bindings (encryption/scram extras) are
           # compiled deps that also need the riseproject.dev index above.
           CIBW_TEST_REQUIRES: pytest pytest-asyncio
-          CIBW_TEST_EXTRAS: encryption,scram,serialization
+          # twisted: 26.10's autobahn.test imports the twisted framework modules
+          # (test_import_all), though the twisted suites themselves stay excluded.
+          CIBW_TEST_EXTRAS: encryption,scram,serialization,twisted
           # Test the installed wheel via --pyargs (not the checkout) so a
           # packaging mistake can't hide behind the source tree; excludes
           # autobahn.twisted, matching upstream's own `just test-asyncio`.