fix(loki): 修复日志匹配规则

apps/infra/monitor/loki/helmchart-promtail.yaml

@@ -25,5 +25,5 @@ spec:
             regex: true
           # 匹配log_collecting_only_errors标签并只保留stderr流
           - source_labels: [__meta_kubernetes_pod_label_log_collecting_only_errors]
-            action: keep
-            regex: stderr
+            action: drop
+            regex: stdout