Fix feed by not using pagination

[frankieroberto]

I think this should resolve #330 but need to test it somehow.

[paulrobertlloyd]

Would something like this in your package.json work for testing:

"dependencies": {
  "@x-govuk/govuk-eleventy-plugin": "x-govuk/govuk-eleventy-plugin#fix-feed-by-not-using-pagination"
}