Upgrade to github gems and add jsonapi suppliers endpoint for user app

app/controllers/users/suppliers_controller.rb

@@ -0,0 +1,14 @@
+module Users
+  class SuppliersController < Users::ApplicationController
+
+    def show
+      @supplier = Supplier.find(params[:id])
+      render json: {}, status: :not_found and return unless @supplier.present?
+      render json: @supplier, include: %w[
+        product_categories
+        product_categories.products
+        product_categories.products.product_variants
+      ]
+    end
+  end
+end