Protobuf support: Correct Java CI CheckStyle error

Signed-off-by: zhouzh_zzz <zhouzh_zzz@qq.com>

redisson/src/main/java/org/redisson/codec/ProtobufCodec.java

@@ -189,7 +189,7 @@ public class ProtobufCodec extends BaseCodec {
 
     }
 
-    private static abstract class BasicSerializerFactoryConcreteGetter extends BasicSerializerFactory {
+    private abstract static class BasicSerializerFactoryConcreteGetter extends BasicSerializerFactory {
         protected BasicSerializerFactoryConcreteGetter(SerializerFactoryConfig config) {
             super(config);
         }