GYU Release: Testing and Marketing

### Your use case

This issue coordinates the events that need to happen as we plan to release the updates for the Get Your Updates work: https://github.com/vector-im/element-web/issues/24291

### Plan

```[tasklist]
### Tasks
- [ ] Get the changes into Develop/Nightly -
- [x] Ask internal team members to test the changes -
- [x] Organise and run a testing session -
- [x] Present at the Element Sync internal for visibility and help - 26 June, 2023
- [ ] Get the changes into an RC - 27 June, 2023
- [ ] Release the RC - 4 July, 2023
- [ ] Draft content for the Marketing team - [Internal doc only](https://docs.google.com/document/d/1g33ZL6xqshAscnLImccsde64w01DoDfT0VKLxXUTMOg/edit?usp=sharing)
- [ ] Analytics -
- [ ] https://github.com/vector-im/internal-planning/issues/453
```