Revert "ingress-nginx-external: Update Helm release ingress-nginx to v4.12.0"

This reverts commit f1a54ba.

Author: pando85

system/ingress-nginx-external/Chart.yaml

@@ -3,5 +3,5 @@ name: ingress-nginx
 version: 0.0.0
 dependencies:
   - name: ingress-nginx
-    version: 4.12.0
+    version: 4.11.3
     repository: https://kubernetes.github.io/ingress-nginx