ACQE-8114: Mainline deployment PR

- Added pr_exclude as it is failing in all PRs.

Author: Karishmathakare19

app/code/Magento/Paypal/Test/Mftf/Test/EnablePaypalExpressCheckoutAndSubmitAnOrderUsingPaypalExpressCheckoutTest.xml

@@ -15,6 +15,8 @@
             <description value="Enable paypal express checkout and validate the customer checkout payment works with paypal express"/>
             <severity value="MAJOR"/>
             <testCaseId value="AC-6951"/>
+            <!-- This is a third-party test, and the pr_exclude was missed in this file -->
+            <group value="pr_exclude"/>
         </annotations>
         <before>
             <!--Enable free shipping method -->