feat(junit-4.10): Migrate to JSON component

Author: PerfectSlayer

dd-java-agent/instrumentation/junit-4.10/src/main/java/datadog/trace/instrumentation/junit4/JUnit4Utils.java

@@ -1,10 +1,11 @@
 package datadog.trace.instrumentation.junit4;
 
+import static datadog.json.JsonMapper.toJson;
+
 import datadog.trace.api.civisibility.config.TestIdentifier;
 import datadog.trace.api.civisibility.events.TestDescriptor;
 import datadog.trace.api.civisibility.events.TestSuiteDescriptor;
 import datadog.trace.util.MethodHandles;
-import datadog.trace.util.Strings;
 import java.lang.annotation.Annotation;
 import java.lang.invoke.MethodHandle;
 import java.lang.reflect.Method;
@@ -201,7 +202,7 @@ public static String getParameters(final Description description) {
 
     // No public access to the test parameters map in JUnit4.
     // In this case, we store the fullTestName in the "metadata.test_name" object.
-    return "{\"metadata\":{\"test_name\":\"" + Strings.escapeToJson(methodName) + "\"}}";
+    return "{\"metadata\":{\"test_name\":" + toJson(methodName) + "}}";
   }
 
   public static List<String> getCategories(Class<?> testClass, @Nullable Method testMethod) {