HelmReleases admission-provider-aws-runtime/application should use admission helm charts

[mreichardt95]

Flux' HelmReleases like admission-provider-aws-runtime currently use provider-aws Chart when they should be using the admission Chart, like: https://github.com/gardener/gardener-extension-provider-aws/tree/master/charts/gardener-extension-admission-aws/charts

Currently, the admission-provider-aws-application/runtime HelmReleases do not deploy any resources.

apiVersion: helm.toolkit.fluxcd.io/v2
kind: HelmRelease
metadata:
  annotations:
    meta.helm.sh/release-name: extensions
    meta.helm.sh/release-namespace: flux-system
  name: admission-provider-aws-runtime
  namespace: flux-system
spec:
  chart:
    spec:
      chart: provider-aws
      interval: 1m
      reconcileStrategy: ChartVersion
      sourceRef:
        kind: HelmRepository
        name: gardener-community-charts
        namespace: flux-system
      version: 1.59.1
  dependsOn:
    - name: admission-provider-aws-application 

With https://github.com/gardener/gardener-extension-provider-aws/releases/tag/v1.59.0 the admission part has been seperated into different charts.

[lotharbach]

Fixed with #1935
Will look into Backport releases tomorrow