Fix sig actions extraction

Author: devoxin

common/src/main/java/dev/lavalink/youtube/cipher/SignatureCipherManager.java

@@ -46,6 +46,7 @@ public class SignatureCipherManager {
   private static final Logger log = LoggerFactory.getLogger(SignatureCipherManager.class);
 
   private static final String VARIABLE_PART = "[a-zA-Z_\\$][a-zA-Z_0-9\\$]*";
+  private static final String VARIABLE_PART_OBJECT_DECLARATION = "[\"']?[a-zA-Z_\\$][a-zA-Z_0-9\\$]*[\"']?";
 
   private static final Pattern TIMESTAMP_PATTERN = Pattern.compile("(signatureTimestamp|sts):(\\d+)");
 
@@ -59,7 +60,10 @@ public class SignatureCipherManager {
   );
 
   private static final Pattern ACTIONS_PATTERN = Pattern.compile(
-      "var\\s+([$A-Za-z0-9_]+)\\s*=\\s*\\{\\s*[$A-Za-z0-9_]+\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*,\\s*[$A-Za-z0-9_]+\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*,\\s*[$A-Za-z0-9_]+\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*};");
+      "var\\s+([$A-Za-z0-9_]+)\\s*=\\s*\\{" +
+          "\\s*" + VARIABLE_PART_OBJECT_DECLARATION + "\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*," +
+          "\\s*" + VARIABLE_PART_OBJECT_DECLARATION + "\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*," +
+          "\\s*" + VARIABLE_PART_OBJECT_DECLARATION + "\\s*:\\s*function\\s*\\([^)]*\\)\\s*\\{[^{}]*(?:\\{[^{}]*}[^{}]*)*}\\s*};");
 
   private static final Pattern SIG_FUNCTION_PATTERN = Pattern.compile(
       "function(?:\\s+" + VARIABLE_PART + ")?\\((" + VARIABLE_PART + ")\\)\\{" +