[SoundCloud] Fix SoundcloudSearchExtractorTest.NoNextPage

Search did not return no item at all, causing a NothingFoundException. New search query yields three items on first page

extractor/src/test/java/org/schabi/newpipe/extractor/services/soundcloud/search/SoundcloudSearchExtractorTest.java

@@ -186,7 +186,7 @@ public class SoundcloudSearchExtractorTest {
     public static class NoNextPage extends DefaultSearchExtractorTest {
 
         private static SearchExtractor extractor;
-        private static final String QUERY = "Dan at hor#berlgbd";
+        private static final String QUERY = "wpghüä";
 
         @BeforeAll
         public static void setUp() throws Exception {