Feat: Update role data model in Gatsby by loading additional field

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Previously in #508, we loaded the Role model from Forestry into Gatsby. In the time since that happened, we've added a "team" field for each role. We need to make sure this field is loaded into Gatsby alongside the already existing fields for Role (title, desc, location, domain, commitment).

CodeSee Map of relevant files: https://app.codesee.io/maps/public/c0509b10-2d13-11ed-a3e9-474708ea821c

This change will look very similar to #575 but you'll be adding a field to DaTeamRole instead of DaTeamMember