Update mock resources for YT Mix playlist

Author: litetex

extractor/src/test/java/org/schabi/newpipe/extractor/services/youtube/YoutubeMixPlaylistExtractorTest.java

@@ -28,14 +28,14 @@
 
 public class YoutubeMixPlaylistExtractorTest {
 
-    private static final String VIDEO_ID = "QMVCAPd5cwBcg";
-    private static final String VIDEO_TITLE = "Mix – ";
     private static final String RESOURCE_PATH = DownloaderFactory.RESOURCE_PATH + "services/youtube/extractor/mix/";
     private static final Map<String, String> dummyCookie = new HashMap<>();
 
     private static YoutubeMixPlaylistExtractor extractor;
 
     public static class Mix {
+        private static final String VIDEO_ID = "QMVCAPd5cwBcg";
+        private static final String VIDEO_TITLE = "Mix – ";
 
         @BeforeAll
         public static void setUp() throws Exception {
@@ -122,6 +122,8 @@ void getStreamCount() {
 
     public static class MixWithIndex {
 
+        private static final String VIDEO_ID = "QMVCAPd5cwBcg";
+        private static final String VIDEO_TITLE = "Mix – ";
         private static final int INDEX = 4;
         private static final String VIDEO_ID_NUMBER_4 = "lWA2pjMjpBs";
 
@@ -204,6 +206,7 @@ void getStreamCount() {
     }
 
     public static class MyMix {
+        private static final String VIDEO_ID = "_AzeUSL9lZc";
 
         @BeforeAll
         public static void setUp() throws Exception {
@@ -288,6 +291,8 @@ void getStreamCount() {
 
     public static class Invalid {
 
+        private static final String VIDEO_ID = "QMVCAPd5cwBcg";
+
         @BeforeAll
         public static void setUp() throws IOException {
             YoutubeParsingHelper.resetClientVersionAndKey();