Make Disposable interface implement Closeable

proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherDecoder.java

@@ -30,6 +30,6 @@ public class MinecraftCipherDecoder extends MessageToMessageDecoder<ByteBuf> {
 
   @Override
   public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
-    cipher.dispose();
+    cipher.close();
   }
 }

proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCipherEncoder.java

@@ -30,6 +30,6 @@ public class MinecraftCipherEncoder extends MessageToMessageEncoder<ByteBuf> {
 
   @Override
   public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
-    cipher.dispose();
+    cipher.close();
   }
 }

proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressDecoder.java

@@ -58,6 +58,6 @@ public class MinecraftCompressDecoder extends MessageToMessageDecoder<ByteBuf> {
 
   @Override
   public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
-    compressor.dispose();
+    compressor.close();
   }
 }

proxy/src/main/java/com/velocitypowered/proxy/protocol/netty/MinecraftCompressEncoder.java

@@ -47,6 +47,6 @@ public class MinecraftCompressEncoder extends MessageToByteEncoder<ByteBuf> {
 
   @Override
   public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
-    compressor.dispose();
+    compressor.close();
   }
 }