add junit-platform-launcher dependency

Author: NielsCW

opa-async-java-client/build.gradle

@@ -23,6 +23,7 @@ dependencies {
     testImplementation "org.junit.jupiter:junit-jupiter-api"
 
     testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine"
+    testRuntimeOnly "org.junit.platform:junit-platform-launcher"
     testRuntimeOnly "com.fasterxml.jackson.core:jackson-databind"
     testRuntimeOnly "org.slf4j:slf4j-simple"