Social preview image is too minimal

### Problem

The social preview image only shows our logo on a solid background. This is far too minimal and doesn’t tell much of a story of what our website or elementary OS is

### Proposal

We should come up with a new social preview image that shows elementary OS running on a computer, maybe a few different computers like a desktop, laptop, and tablet like the StarLite? Something that gives an idea this has something to do with computers at least

### Prior Art (Optional)

_No response_