Update checkstyle to version 8.3

http-api/src/main/java/net/runelite/http/api/xtea/XteaClient.java

@@ -88,7 +88,9 @@ public class XteaClient
 		try (ResponseBody body = response.body())
 		{
 			InputStream in = body.byteStream();
+			// CHECKSTYLE:OFF
 			return RuneliteAPI.GSON.fromJson(new InputStreamReader(in), new TypeToken<List<XteaKey>>() { }.getType());
+			// CHECKSTYLE:ON
 		}
 		catch (JsonParseException ex)
 		{