added `post-processors` block to run chained post-processors after a build.
Before this, defining multiple `post-processor` blocks after
provisioning steps would run them sequentially, now doing this makes them start
from the build's artifact. To queue post-processors you now have to define them
in a `post-processors` block.
This is a breaking change.
* Update and pin dependencies
* Update NextJS Scripts
* npm run lint
* npm run format
* docs generator: indent docs by two and make spacing better
Co-authored-by: Adrien Delorme <azr@users.noreply.github.com>
