Use Cached Endpoints

[mkouzel-yext]

This change updated the LiveAPI endpoints that search-core provides so that it provides the cached version of the endpoints. Using the cached endpoints helps improve performance.

J=WAT-4442
TEST=manual

Built test site with new change, saw that the cached endpoints were being used.

[Fondryext]

So the way we usually make changes to our github repos is:

1. Make a new branch for the new version. In this case this'll be 2.5.5, so the branch will probably be called hotfix/v2.5.5
2. Up the package version on that branch correspondingly. In a lot of our repos this change gets created automatically
3. Make a pull request to merge your changes into the hotfix branch
4. Once all changes are in the hotfix branch, then make a request from the hoftix branch into master
5. Once that's pulled, we make a new release tag and publish to npm, and possibly pull into develop

Happy to expand on any of these