[Task]: Have a static JSON file with CodeGate version

[aponcedeleonch]

Description

Instead of calling GitHub API for checking if the deployed version is the latest one, we could just deploy a latest_version.json static JSON file on the documentation site, and query that without worrying about rate limits.

We could post a PR every time that we make a CodeGate release to update the JSON file.

Idea of @kantord

Additional Context

Conversation in Discord

[lukehinds]

@kevinholmesmobile / @dmjb / @lujunsan 👀

[jhrozek]

@dmjb this is related to the update service? Should this be in progress already?

[davolokh]

https://docs.google.com/document/d/1vaZI2YBbzbYyzrklvzXyQyZbgFjYiR7lLmI25HdkbAA/edit?usp=sharing_eil&ts=67abf1e7

[lukehinds]

will close this, as we have work in flight (see @davolokh 's link)