Floorp v12.12.2

Release Note: https://blog.floorp.app/release/12.12.2

What's Changed

• feat(tests): comprehensive browser test infrastructure and shared utilities by @Ryosuke-Asano in https://github.com/Floorp-Projects/Floorp/pull/2377

Full Changelog: https://github.com/Floorp-Projects/Floorp/compare/v12.12.1...v12.12.2