Fix JUnit 5 config for gradle

Fixes #1457

Author: pdkovacs

build.gradle

@@ -37,5 +37,9 @@ publishing {
 dependencies {
     implementation group: 'org.slf4j', name: 'slf4j-api', version: '2.0.15'
     testImplementation group: 'org.slf4j', name: 'slf4j-simple', version: '2.0.15'
-    testImplementation group: 'org.junit', name: 'junit-bom', version: '5.11.4', ext: 'pom'
+    testImplementation group: 'org.junit.jupiter', name: 'junit-jupiter', version: '5.11.4'
+}
+
+test {
+    useJUnitPlatform()  // This is required for JUnit 5
 }