SPIKE: Figure out next steps on doc site build

[jwad03]

We need to figure out what to do about our docs site. We are currently using Gatsby v3, which is no longer supported and 2 versions behind.

Some considerations:

• How do we keep our dependencies up to date and avoid staying so far behind?
• ~~How do we make our docs site compatible with our upcoming Carbon Charts work?~~
• What is the level of effort for each of the options below, and which makes the most sense considering our future work?

Options:

• Upgrade to v4
• Upgrade to v5
• Move away from Gatsby and replace with NextJS

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(from conversation with Ryan) What are the pain points / why should we consider moving away from Gatsby?

Pain points:

• Does not play well with storybook
• Has underlying dependencies that have not been updated in a while
• GraphQL is sitting on Gatsby, so this may be the biggest challenge about moving away from it

Suggestions:

• NextJS would be a great alternative to consider
• Timebox investigating the upgrade