Change number of kubegres replicas

Lonhorn should already enable duplication so
there's no need for kubegres to do the same

.gitignore

@@ -1 +1,2 @@
 **/*-secret.yaml
+**/secret.yaml

apps/miniflux/app/postgres.yaml

@@ -4,7 +4,7 @@ metadata:
   name: miniflux-db
   namespace: miniflux
 spec:
-   replicas: 2
+   replicas: 1
    image: postgres:16-alpine
    database:
       size: 2Gi

apps/tandoor/app/postgres.yaml

@@ -4,7 +4,7 @@ metadata:
   name: recipes-db
   namespace: tandoor
 spec:
-   replicas: 2
+   replicas: 1
    image: postgres:16-alpine
    database:
       size: 2Gi