fix(MusicManager): missing checks and reworked logic of who is the DJ

DJ is now the first user who makes the bot connect to a voice channel and doesn't change until the voice channel changes

pom.xml

@@ -101,17 +101,17 @@
         <dependency>
             <groupId>net.dv8tion</groupId>
             <artifactId>JDA</artifactId>
-            <version>5.1.0</version>
+            <version>5.1.2</version>
         </dependency>
         <dependency>
             <groupId>dev.arbjerg</groupId>
             <artifactId>lavaplayer</artifactId>
-            <version>2.2.1</version>
+            <version>2.2.2</version>
         </dependency>
         <dependency>
             <groupId>dev.lavalink.youtube</groupId>
             <artifactId>v2</artifactId>
-            <version>1.7.2</version>
+            <version>1.8.3</version>
         </dependency>
 
         <dependency>