feat(dependencies): upgrade supported cluster components

- Bump K3s to v1.36.2+k3s1, Calico to v3.32.1, Cilium to v1.20.0,
  kube-vip to v1.2.2, kube-vip cloud provider to v0.0.12, and MetalLB to
  v0.16.0 across sample inventory, role defaults, and argument specs
- Pin the Cilium CLI with a new cilium_cli_tag (v0.19.7) instead of the
  floating stable.txt lookup
- Replace the CiliumBGPPeeringPolicy v2alpha1 BGP template with the
  v2 CiliumBGPClusterConfig, CiliumBGPPeerConfig, CiliumBGPAdvertisement,
  and CiliumLoadBalancerIPPool resource set
- Move Cilium load balancer Helm keys from bpf.loadBalancer to the valid
  top-level loadBalancer path
- Add preflight schema validation and remove the deprecated policy after
  the v2 objects are accepted
- Wait for cilium status after installation
- Pin kube-vip RBAC in a repository template instead of fetching a
  mutable URL, and include EndpointSlice permissions
- Fix the kube-vip bgppeers format to address:ASN comma-separated peers
- Fail clearly when the MetalLB speaker tag replacement does not apply
- Drop the obsolete MetalLB webhook service name version branch

roles/k3s_server_post/tasks/metallb.yml

@@ -85,17 +85,9 @@
 
 - name: Set metallb webhook service name
   ansible.builtin.set_fact:
-    metallb_webhook_service_name: >-
-      {{
-        (
-          (metal_lb_controller_tag_version | regex_replace('^v', ''))
-          is
-          version('0.14.4', '<', version_type='semver')
-        ) | ternary(
-          'webhook-service',
-          'metallb-webhook-service'
-        )
-      }}
+    # Inspected the v0.16.0 manifest: the newer webhook Service name is used
+    # by every supported MetalLB release, so the old pre-0.14.4 branch is gone.
+    metallb_webhook_service_name: metallb-webhook-service
 
 - name: Test metallb-system webhook-service endpoint
   ansible.builtin.command: >-