feat: add write permissions to postgres for /etc/postgresql-custom/read-replica.conf

Author: jfroche

nix/systemModules/postgres/default.nix

@@ -205,7 +205,7 @@ in
       "C /etc/postgresql/pg_hba.conf 0440 ${defaultUser} ${defaultGroup} - ${pg_hba}"
       "C /etc/postgresql/pg_ident.conf 0440 ${defaultUser} ${defaultGroup} - ${pg_ident}"
       "C /etc/postgresql/postgresql.conf 0440 ${defaultUser} ${defaultGroup} - ${configFile}"
-      "C /etc/postgresql-custom/read-replica.conf 0440 ${defaultUser} ${defaultGroup} - ${read-replica-conf}"
+      "C /etc/postgresql-custom/read-replica.conf 0664 ${defaultUser} ${defaultGroup} - ${read-replica-conf}"
     ];
 
     environment = {