fix: changed stack trace list from 3 to 2, to get correct step definition file name in reports

Author: tts-ll

java8/src/main/java/cucumber/runtime/java8/Java8StepDefinition.java

@@ -38,7 +38,7 @@ public <T extends StepdefBody> Java8StepDefinition(String pattern, long timeoutM
         this.body = body;
 
         this.argumentMatcher = new JdkPatternArgumentMatcher(this.pattern);
-        this.location = new Exception().getStackTrace()[3];
+        this.location = new Exception().getStackTrace()[2];
         this.method = getAcceptMethod(body.getClass());
         try {
             Class<?>[] arguments = resolveRawArguments(bodyClass, body.getClass());