Fix ingress-nginx version computation for k8s 1.27

Thomas Morinrequested to merge
tmmorin-main-patch-91524 into main

This MR fixes ingress-nginx version computation for k8s 1.27, which has been shown to fail in nighlty scheduled runs:

2024/08/23 22:10:53.564807 HelmRelease/sylva-units state changed: InstallFailed - Helm install failed for release kubeadm-capo/sylva-units with chart sylva-units@0.0.0-git-37f635ad+1: execution error at (sylva-units/templates/units.yaml:182:14): unit 'ingress-nginx' has no version set to true inside 'helm_chart_versions':
4.8.200: ""
4.10.102: ""
Edited by Thomas Morin

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