Update graphql to latest version once supported in react-query

[ryanchristo]

Ref: #62 (comment)

Tracking issue for upgrading graphql-request from 5.0.0 to the latest major version.

As part of adding a graphql client, we have a small dependency which for some reason required being pinned 1 major version behind the latest. I don't think this is a major issue but a good thing to track for the future health of the groups-ui repo.

See this comment: #112 (comment)

Basically, with the combination of react-query + graphql-request, react-query asks us to use graphql-request v5x rather than v6x.

I think a good task for that at this stage could be simply to open an issue with react-query to specify what the plans are for supporting graphql-request v6x (investigate upgrade process for graphql-request).