Bring registry replicas back to 1

It doesn't do much since the pulls go directly from hetzner I believe,
and keeping it at 1 makes debugging easier for right now

Author: yuvipanda

config/hetzner-2i2c.yaml

@@ -2,7 +2,7 @@ projectName: hetzner-2i2c
 
 registry:
   enabled: true
-  replicas: 4
+  replicas: 1
   config:
     storage:
       # Uncomment this and comment out the s3 config to use filesystem