How does JUnit 6 integrate with Maven and Gradle?

<!-- Maven: complete JUnit 6 setup -->
<properties>
    <java.version>17</java.version>
    <maven.compiler.source>17</maven.compiler.source>
    <maven.compiler.target>17</maven.compiler.target>
</properties>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.junit</groupId>
            <artifactId>junit-bom</artifactId>
            <version>6.1.1</version>
            <type>pom</type><scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<dependencies>
    <dependency>
        <groupId>org.junit.jupiter</groupId>
        <artifactId>junit-jupiter</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>3.3.0</version>  <!-- 3.x required for JUnit 6 -->
        </plugin>
    </plugins>
</build>

// Gradle: complete JUnit 6 setup (build.gradle.kts)
plugins {
    java
}

java {
    toolchain {
        languageVersion = JavaLanguageVersion.of(17)
    }
}

dependencies {
    testImplementation(platform("org.junit:junit-bom:6.1.1"))
    testImplementation("org.junit.jupiter:junit-jupiter")
    testRuntimeOnly("org.junit.platform:junit-platform-launcher")
}

tasks.test {
    useJUnitPlatform()          // Required: tells Gradle to use JUnit Platform
    maxParallelForks = Runtime.getRuntime().availableProcessors()
}