fix(auth): allow admins to change any username including their own

services/api/internal/auth/admin_handler.go

@@ -63,7 +63,7 @@ func (h *Handler) UpdateUser(ctx context.Context, req gen.UpdateUserRequestObjec
 	if err != nil {
 		return nil, err
 	}
-	patch := UserPatch{DisplayName: req.Body.DisplayName, IsBlocked: req.Body.IsBlocked, ReviewsUploads: req.Body.ReviewsUploads}
+	patch := UserPatch{Username: req.Body.Username, DisplayName: req.Body.DisplayName, IsBlocked: req.Body.IsBlocked, ReviewsUploads: req.Body.ReviewsUploads}
 	if req.Body.Role != nil {
 		r := Role(*req.Body.Role)
 		patch.Role = &r