I am getting the following error when building my Android app while compiling by syles.xml file:

Error: android:windowSplashScreenBackground requires API level 31 (current min is 30) [NewApi]

The error description is very good and states:

   Similarly, you can use tools:targetApi="11" in an XML file to indicate that
   the element will only be inflated in an adequate context.

I updated the xml file with:

<resources xmlns:tools="http://schemas.android.com/tool">
     ...
     <style name="AppTheme.Template.Base" parent="Theme.AppCompat.Light.DarkActionBar">
        ...
        <item tools:targetApi="31" name="android:windowSplashScreenBackground">@color/evergreen</item>

Yet I still get:

<snip>/app/src/main/res/values/styles.xml:29: Error: android:windowSplashScreenBackground requires API level 31 (current min is 30) [NewApi]
        <item tools:targetApi="31" name="android:windowSplashScreenBackground">@color/evergreen</item>
                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Do I have the syntax incorrect or is this simply not supported?