[Full Changelog](https://github.com/vector-im/element-web/compare/v1.7.5...v1.7.6-rc.1) * Upgrade to React SDK 3.4.0-rc.1 and JS SDK 8.3.0-rc.1 * Update from Weblate [\#15125](https://github.com/vector-im/element-web/pull/15125) * Support usage of Jitsi widgets with "openidtoken-jwt" auth [\#15114](https://github.com/vector-im/element-web/pull/15114) * Fix eslint ts override tsx matching and delint [\#15064](https://github.com/vector-im/element-web/pull/15064) * Add testing to review guidelines [\#15050](https://github.com/vector-im/element-web/pull/15050)