gotify: migrate to envFrom with per-container InfisicalSecrets

Stores the fully assembled database DSN in Infisical instead of building it from three helper vars with $() interpolation, which envFrom cannot feed.

applications/gotify/postgres/gotify-postgres-statefulset.yaml

@@ -31,24 +31,9 @@ spec:
           volumeMounts:
             - name: gotify-postgresql-database
               mountPath: /var/lib/postgresql/pgdata
-          env:
-            - name: PGDATA
-              value: /var/lib/postgresql/pgdata/data
-            - name: POSTGRES_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: gotify-secrets
-                  key: db_password
-            - name: POSTGRES_USER
-              valueFrom:
-                secretKeyRef:
-                  name: gotify-secrets
-                  key: db_user
-            - name: POSTGRES_DB
-              valueFrom:
-                secretKeyRef:
-                  name: gotify-secrets
-                  key: db_name
+          envFrom:
+            - secretRef:
+                name: gotify-postgres-secrets
       volumes:
         - name: gotify-postgresql-database
           persistentVolumeClaim: