Updates ingress-nginx chart to 4.12.3

Author: jupyterhub-bot

mybinder/Chart.yaml

@@ -17,7 +17,7 @@ dependencies:
   # Source code:   https://github.com/kubernetes/ingress-nginx/tree/main/charts/ingress-nginx
   # App changelog: https://github.com/kubernetes/ingress-nginx/blob/main/Changelog.md
   - name: ingress-nginx
-    version: "4.12.2"
+    version: "4.12.3"
     repository: https://kubernetes.github.io/ingress-nginx
     condition: ingress-nginx.enabled