Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/kubevirt/kubevirt.github.io/blob/main/OWNERS)~~ [phoracek]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Adding the names and companies of the speakers. Also swapping two slots at the request of one of the speakers. And we improved cosmetics of the times