Update application.properties (#35)

Author: Harsh3305

src/main/resources/application.properties

@@ -1,7 +1,7 @@
-server.port=8082
+server.port=${APPLICATION_PORT}
 spring.data.mongodb.uri=${MONGODB_URI}
 spring.data.mongodb.database=HRV-Mart-Backend-Auth
 spring.kafka.producer.bootstrap-servers= localhost:9092
 spring.kafka.producer.key-serializer= org.apache.kafka.common.serialization.StringSerializer
 spring.kafka.producer.value-serializer= org.springframework.kafka.support.serializer.JsonSerializer
-spring.kafka.consumer.group-id=user
+spring.kafka.consumer.group-id=user