Fix appsec int tests not actually running

After upgrade to Gradle

Author: cataphract

appsec/tests/integration/build.gradle

@@ -42,6 +42,7 @@ dependencies {
     implementation 'com.flipkart.zjsonpatch:zjsonpatch:0.4.16'
     implementation 'org.junit.jupiter:junit-jupiter-engine:5.12.2'
     implementation 'org.junit.jupiter:junit-jupiter-params:5.12.2'
+    implementation 'org.junit.platform:junit-platform-launcher'
 
     testRuntimeOnly 'com.mysql:mysql-connector-j:9.3.0'
 }
@@ -425,6 +426,9 @@ testMatrix.each { spec ->
             excludeEngines('junit-vintage')
         }
 
+        it.testClassesDirs = sourceSets.test.output.classesDirs
+        it.classpath = sourceSets.test.runtimeClasspath
+
         it.systemProperty 'PHP_VERSION', phpVersion
         it.systemProperty 'VARIANT', variant
         if (project.hasProperty('XDEBUG')) {