Fix: Change audio bitrate from 128k to 48k for PTT messages as per WhatsApp requirements

Author: ffigueroa

src/api/integrations/channel/whatsapp/whatsapp.baileys.service.ts

@@ -3007,7 +3007,7 @@ export class BaileysStartupService extends ChannelStartupService {
           .noVideo()
           .audioCodec('libopus')
           .addOutputOptions('-avoid_negative_ts make_zero')
-          .audioBitrate('128k')
+          .audioBitrate('48k')
           .audioFrequency(48000)
           .audioChannels(1)
           .outputOptions([