Fix node crash on uncaught exception

When fire-and-forget is set, the request promise isn't returned to the log handler, meaning the [catch here](https://github.com/readmeio/metrics-sdks/blob/main/packages/node/src/lib/log.ts#L28-L31) doesn't prevent node from exiting on a request failure.

packages/node/src/lib/metrics-log.ts

@@ -132,7 +132,9 @@ export function metricsAPICall(
   };
 
   if (fireAndForget) {
-    makeRequest();
+    makeRequest().catch((err) => {
+      // silently catch error so we don't crash the node process!
+    });
     return Promise.resolve<LogResponse>({
       ids: getLogIds(body),
     });