Update controller to Helm v3.14.2 and Kubernetes v1.29.0

[stefanprodan]

Upgrade Helm to latest to fix #878

To deploy helm-controller with Helm v3.14.0 use the following bootstrap patch in flux-system/kustomization.yaml:

apiVersion: kustomize.config.k8s.io/v1beta1
kind: Kustomization
resources: 
  - gotk-components.yaml
  - gotk-sync.yaml
images:
  - name: ghcr.io/fluxcd/helm-controller
    newTag: v0.37.4-helm3140

Note that Helm 3.14 will not be included in the next helm-controller patch release due to breaking changes in the Helm SDK behaviour.

[PrivatePuffin]

Another important reason to update to helm 3.14.x, is the fact it includes an IMMENS speedimprovement for complicated templates. We're talking more than 10x(!) speed increases.