Remove support for vite v2 inside @cypress/vite-dev-server

### What would you like?

With the next major version of Cypress, I would like to remove support for vite v2



### Why is this needed?

vite v2 is now 3 major versions behind. Users should be using at least version 4 or version 5. If an older version is needed, an older version of @cypress/vite-dev-server can be installed

### Other

_No response_