feat!: Remove support for k3s and go full-on Talos (#1482)

bootstrap/templates/kubernetes/flux/repositories/helm/prometheus-community.yaml.j2

@@ -0,0 +1,11 @@
+---
+# yaml-language-server: $schema=https://kubernetes-schemas.pages.dev/source.toolkit.fluxcd.io/helmrepository_v1.json
+apiVersion: source.toolkit.fluxcd.io/v1
+kind: HelmRepository
+metadata:
+  name: prometheus-community
+  namespace: flux-system
+spec:
+  type: oci
+  interval: 5m
+  url: oci://ghcr.io/prometheus-community/charts