prepare dir

core/src/test/java/net/christophe/genin/spring/boot/pdfgenerator/core/PdfBuilderTest.java

@@ -26,6 +26,8 @@ public class PdfBuilderTest {
 
     @Before
     public void initialize() {
+        new File(TARGET_TMP_TEST).mkdirs();
+
         parameters = new HashMap<>();
         parameters.put("next", "42");
     }