6 files declare their use of ConditionGroup in Commerce Core 8.2

BuyXGetY.php in modules/promotion/src/Plugin/Commerce/PromotionOffer/BuyXGetY.php

CombinationOffer.php in modules/promotion/src/Plugin/Commerce/PromotionOffer/CombinationOffer.php

ConditionGroupTest.php in tests/src/Unit/ConditionGroupTest.php

OrderItemQuantity.php in modules/promotion/src/Plugin/Commerce/Condition/OrderItemQuantity.php

PaymentGateway.php in modules/payment/src/Entity/PaymentGateway.php

Promotion.php in modules/promotion/src/Entity/Promotion.php