NoClassDefFoundError for PreconditionViolationException when running JUnit5 tests

I can no longer run unit tests for my spring app within VSCode IDE, am only getting the following error when trying to do so:

java.lang.NoClassDefFoundError: org/junit/platform/commons/PreconditionViolationException
	at org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader.createTest(JUnit5TestLoader.java:90)
	at org.eclipse.jdt.internal.junit5.runner.JUnit5TestLoader.loadTests(JUnit5TestLoader.java:48)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:526)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:770)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:464)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)
Caused by: java.lang.ClassNotFoundException: org.junit.platform.commons.PreconditionViolationException
	at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)
	at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
	at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)

PreconditionViolationException is now deprecated, see here, so it would seem Java Test Runner is not aware of it or what. Currently my build.gradle has junit dependencies like this:

        testImplementation "org.junit.jupiter:junit-jupiter-api:5.6.0"
        testImplementation "org.junit.jupiter:junit-jupiter-params:5.6.0"
        testImplementation "org.springframework.boot:spring-boot-starter-test:2.2.8.RELEASE"
        testRuntime "org.junit.jupiter:junit-jupiter-engine:5.6.0"

I had a look at what seemed like a related issue but none of the workarounds from there worked for me.

Beginne damit, den Fehler aus VSCode's JUnit5-Runner mit den in build.gradle gezeigten Gradle-Abhängigkeiten zu reproduzieren, wobei der Fokus auf der fehlenden org.junit.platform.commons.PreconditionViolationException aus dem Stacktrace liegt. Als erledigt gilt die Aufgabe, wenn die JUnit5-Tests der Spring-Anwendung in VSCode ohne den NoClassDefFoundError ausgeführt werden; das Issue nennt keine Repository-Datei und keinen Test, der geändert werden soll.