Minor changes to examples. Updating major semver updates with only `package.json` changes.
I've done my best to make sure that these packages.json files all have `latest` for the `nextjs` package, `cross-env` for those with `server.js` files, etc.
I also added a `package.json` to `with-dynamic-app-layout` (it was missing one previously)
Made sure to test all of these packages post-upgrade to ensure maintained functionality
Regarding a question about having different global layouts via `_app.js` usage, it came up that we could use a static property in the page that needed a different one(Thanks @timneutkens )
Link to the Spectrum post: https://spectrum.chat/?t=af6ca794-5420-4780-abd8-96f085a19e09
This PR adds an example called `with-dynamic-app-layout`, that showcases that use case in the simplest way I could think of.
Let me know if there's changes or improvements to be made. 🎉
