Update setup-foreman action path

[ZoteTheMighty]

This batch change updates the reference to the setup-foreman action to use the current location of the action in the Roblox org. This should be a no-op, or may fix currently-broken CI.
Please refer to confluence for more information.

Created by Sourcegraph batch change pdoyle/migrate-setup-foreman-action.

[github-actions]

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[coveralls]

Coverage remained the same at 94.783% when pulling afaf59c on luafdn-951-migrate-setup-foreman-action into 3231979 on master.