Adress the last requested changes + update YoutubeCommentsExtractor mocks

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

@@ -27,7 +27,7 @@ public class YoutubeParsingHelperTest {
     @Test
     public void testAreHardcodedClientVersionAndKeyValid() throws IOException, ExtractionException {
         assertTrue("Hardcoded client version and key are not valid anymore",
-                YoutubeParsingHelper.areHardcodedClientVersionAndKeyValid());
+                YoutubeParsingHelper.areHardcodedClientVersionAndKeyValid().orElse(false));
     }
 
     @Test
@@ -44,7 +44,7 @@ public class YoutubeParsingHelperTest {
     }
 
     @Test
-    public void testConvertFromGoogleCacheUrl() throws ParsingException {
+    public void testConvertFromGoogleCacheUrl() {
         assertEquals("https://mohfw.gov.in/",
                 YoutubeParsingHelper.extractCachedUrlIfNeeded("https://webcache.googleusercontent.com/search?q=cache:https://mohfw.gov.in/"));
         assertEquals("https://www.infektionsschutz.de/coronavirus-sars-cov-2.html",