Improve rke2 `validate-charts` script

[mgfritch]

Is your feature request related to a problem? Please describe.

Placeholder for feature improvements to the rke2 validate-charts script

Describe the solution you'd like

• the semver compare is incorrect

  rke2/scripts/validate-charts

  Lines 100 to 105 in d377e32

  	if [ "$lower_bound_major" -le "$kube_version_major" ] && \
  	[ "$kube_version_major" -le "$upper_bound_major" ] && \
  	[ "$lower_bound_minor" -le "$kube_version_minor" ] && \
  	[ "$kube_version_minor" -le "$upper_bound_minor" ] && \
  	[ "$lower_bound_patch" -le "$kube_version_patch" ] && \
  	[ "$kube_version_patch" -le "$upper_bound_patch" ]; then

• chart comparison operators (>=, <) are unhandled
  

  rke2/scripts/validate-charts

  Lines 124 to 127 in d377e32

  	version_annotation=$(yq e '.annotations."catalog.cattle.io/kube-version" // ""' $chart_folder/$chart_name/Chart.yaml | awk '{print $2 " " $4}')
  	if [[ ${version_annotation} != " " ]]; then
  	read lower_bound upper_bound <<< $version_annotation
  	supported=$(is_supported ${KUBERNETES_VERSION} $lower_bound $upper_bound)

Describe alternatives you've considered

Convert this script to golang?

Additional context

See also: #9435 (comment)