App must use Google Play Billing Library version 7.0.0 or later

I am using 5.6.

At line 25-36 in the OnlineSubsystemGooglePlay_UPL.xml file I see:

<!-- gradle dependencies additions -->
<buildGradleAdditions>
	<if condition="bSupportsInAppPurchasing">
		<true>
			<insert>
		dependencies {
		implementation 'com.android.billingclient:billing:7.1.1'
		}
			</insert>
		</true>
	</if>
</buildGradleAdditions>

Looking at the github commit (https://github.com/EpicGames/UnrealEngine/commit/2e857ed523d275a9ec22917080810ef0edbe729e) it was updated ~2 months ago

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