fix: prevent Loki log transport from interfering

Graceful shutdown was disabled since it prevents the NestJS shutdown
hooks from running. Clear on error was enabled to prevent logs filling
up the memory when smth is wrong with the receiving Loki instances,
causing OOM errors.

src/logger.ts

@@ -67,6 +67,8 @@ if (config.loki.enabled) {
           lokiFormatter(),
           winston.format.printf((info) => `${info.message}`)
         ),
+        gracefulShutdown: false,
+        clearOnError: true,
       })
     );
   } catch (e) {