Uploading Android AAB to Play Store fails due to unrecognized language "rs"

Uploading an AAB built with Qt 5.14.1 to the Play Store results in the following error:

Your App Bundle targets the following unrecognized languages: rs. The list of supported language codes can be found in the IANA registry. Invalid languages caused by third-party libraries can be excluded using the resConfigs Gradle property.

This seems to be caused by Qt providing strings for the Ministro services in the (invalid) "rs" language:
https://github.com/qt/qtbase/blob/dev/src/android/java/res/values-rs/strings.xml