Bump up replicas to 2

Author: jaymedina

modules/apache-airflow/templates/values.yaml

@@ -841,7 +841,7 @@ scheduler:
 
   # Airflow 2.0 allows users to run multiple schedulers,
   # However this feature is only recommended for MySQL 8+ and Postgres
-  replicas: 1
+  replicas: 2
   # Max number of old replicasets to retain
   revisionHistoryLimit: ~
 
@@ -1324,7 +1324,7 @@ webserver:
     scheme: HTTP
 
   # Number of webservers
-  replicas: 1
+  replicas: 2
   # Max number of old replicasets to retain
   revisionHistoryLimit: ~