fix: update RabbitMQ frame_max parameter for 4.1+ compatibility

Updates the minimum frame_max value from 4096 to 8192 to meet the requirements
of RabbitMQ 4.1+ servers. This resolves connection failures with newer RabbitMQ
versions while maintaining backwards compatibility with older versions.

.env.example

@@ -47,6 +47,7 @@ DATABASE_DELETE_MESSAGE=true
 RABBITMQ_ENABLED=false
 RABBITMQ_URI=amqp://localhost
 RABBITMQ_EXCHANGE_NAME=evolution
+RABBITMQ_FRAME_MAX=8192
 # Global events - By enabling this variable, events from all instances are sent in the same event queue.
 RABBITMQ_GLOBAL_ENABLED=false
 # Prefix key to queue name