fix(miniflux): Drop hardcoded database parameter from app

apps/base/miniflux/database.yaml

@@ -8,9 +8,7 @@ spec:
     size: 1Gi
   numberOfInstances: 1
   users:
-    miniflux:
-    - superuser
-    - createdb
+    miniflux: []
   databases:
     miniflux: miniflux
   postgresql:

apps/base/miniflux/deployment.yaml

@@ -15,10 +15,14 @@ spec:
         - image: ghcr.io/miniflux/miniflux:2.0.51-distroless
           name: miniflux
           env:
+            - name: DATABASE_URL
+              value: sslmode=require
             - name: RUN_MIGRATIONS
               value: "1"
             - name: PGHOST
               value: miniflux-postgres.miniflux.svc.cluster.local
+            - name: PGDATABASE
+              value: miniflux
             - name: PGUSER
               valueFrom:
                 secretKeyRef: