fix(container): update image ghcr.io/siderolabs/installer to v1.8.1 (#1596)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

bootstrap/templates/kubernetes/bootstrap/talos/talconfig.yaml.j2

@@ -1,7 +1,7 @@
 # yaml-language-server: $schema=https://raw.githubusercontent.com/budimanjojo/talhelper/master/pkg/config/schemas/talconfig.json
 ---
 # renovate: datasource=docker depName=ghcr.io/siderolabs/installer
-talosVersion: v1.8.0
+talosVersion: v1.8.1
 # renovate: datasource=docker depName=ghcr.io/siderolabs/kubelet
 kubernetesVersion: v1.31.1