minor #272 Add missing note about changes in constructor of ShipmentL…

…ineItemsConverter (GSadee)

This PR was merged into the 1.0-dev branch.

Discussion
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Fix for comment: #264 (comment)

Commits
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f8a0d9d Add missing note about changes in constructor of ShipmentLineItemsConverter

UPGRADE.md

@@ -7,6 +7,8 @@
 1. The method `Sylius\RefundPlugin\Provider\TaxRateProviderInterface` has been changed 
 from `provide(OrderItemUnitInterface $orderItemUnit): ?string` to `provide(AdjustableInterface $adjustable): ?string`.
 
+1. The `TaxRateProviderInterface $taxRateProvider` has been added as the second argument in constructor of `Sylius\RefundPlugin\Converter\ShipmentLineItemsConverter`
+
 1. The suffix `Exception` has been removed from classes: 
     * `Sylius\RefundPlugin\Exception\InvalidRefundAmountException` 
     * `Sylius\RefundPlugin\Exception\OrderNotAvailableForRefundingException`