chore: Update ghcr.io/prometheus-community/charts/prometheus-node-exporter Docker tag to v4.49.0

Author: renovate[bot]

flux/repositories/oci/prometheus/node-exporter.yml

@@ -9,4 +9,4 @@ spec:
     operation: copy
   url: oci://ghcr.io/prometheus-community/charts/prometheus-node-exporter
   ref:
-    tag: 4.48.0
+    tag: 4.49.0