JUnit6TestLoader does not work with projects configured to cross-compile to Java < v17 (by default)

[ctjdr]

Hi, since I updated my Maven modules to use JUnit 6 I've got problems running the tests with VS Code if the module is configured to cross-compile to Java 11.
My Maven modules use this configuration to make sure the compiled artifacts run on Java 11 environments:

<pluginManagement>
    <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.15.0</version>
        <configuration>
            <release>11</release>
        </configuration>
    </plugin>
</pluginManagement>

Based on this config, VS Code automatically adds my local JDK 11 installation as a classpath dependency although I also have Java 21 installed as well.
Now, when I try to run any unit test in VS Code I get the following output in the Debug Console:

java.lang.UnsupportedClassVersionError: org/eclipse/jdt/internal/junit6/runner/JUnit6TestLoader has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0

I know that I can solve this problem by setting the JDK Runtime to "JavaSE-21" per module. But I have dozens of projects with dozens of modules and setting the JDK runtime for each of them manually is tedious. So I wonder if there is another way to get test execution in VS Code working without setting the JDK Runtime a hundred times.

Thanks!