Fixes the procedure of refreshing an access token in GK integration

[sergeibbb]

Description

Looks like the docs indicate that you need to send an access token in the body for this request. I don't know if it's always been that way or if that's recent, but the route was previously working for us without doing this. We will need to update it (GLVSC-569)

Checklist

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[axosoft-ramint]

Looks good - just some minor changes.

[axosoft-ramint]

LGTM