chore(deps): update container image n8nio/n8n to v2.26.4

Author: renovate[bot]

Helm/apps/n8n/values.yaml

@@ -1,6 +1,6 @@
 ---
 n8n:
-  image: n8nio/n8n:2.26.3
+  image: n8nio/n8n:2.26.4
   dataSize: 10Gi
   port: 5678
   replicas: 1