fix: use correct batch size param for pino-logflare (#600)

Author: pcnc

src/internal/monitoring/logflare.ts

@@ -22,7 +22,7 @@ export default function () {
   return createLogFlareWriteStream({
     apiKey: logflareApiKey,
     sourceToken: logflareSourceToken,
-    batchMaxSize: 100,
+    size: 100,
     onError: (err: Error) => {
       console.error(`[Logflare][Error] ${err.message} - ${err.stack}`)
     },