Update release notes

Author: rachelmcr

RELEASE-NOTES.txt

@@ -8,6 +8,7 @@
 - [*] Order Creation: Fixes a bug where selecting a variable product to add to a new order would sometimes open the wrong list of product variations. [https://github.com/woocommerce/woocommerce-ios/pull/7042]
 - [*] Collect payment button on Order Details no longer flickers when the screen loads [https://github.com/woocommerce/woocommerce-ios/pull/7043]
 - [*] Issue refund button on Order Details is shown for all paid orders [https://github.com/woocommerce/woocommerce-ios/pull/7046]
+- [*] Order Creation: Fixes several bugs with the Products section not showing the correct order items or not correctly updating the item quantity. [https://github.com/woocommerce/woocommerce-ios/pull/7067]
 
 9.3
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