Bump healthcheck interval to 10s

Author: lionello

samples/django-channels-redis-postgres/compose.yaml

@@ -18,6 +18,7 @@ services:
       # wget or curl required for healthchecks on services with a published port
       # this gets parsed by Defang and provided to the load balancers as well
       test: ["CMD", "python3", "-c", "import sys, urllib.request; urllib.request.urlopen(sys.argv[1]).read()", "http://localhost:8000/"]
+      interval: 10s
     depends_on:
       - redis-service
       - postgres-service