v9.12.1

What's Changed

• replace error by @basfroman in #3092
• Update type hint/docstring for ws_shutdown_timer by @thewhaleking in #3090
• Commenting on the test until the new governance come by @basfroman in #3101
• Bumping scalecodec to 1.2.12 by @basfroman in #3104

Full Changelog: v9.12.0...v9.12.1