chore(deps): update ghcr.io/tarampampam/error-pages docker tag to v3 (#37)

* Update ghcr.io/tarampampam/error-pages Docker tag to v3

* Change default template

---------

Co-authored-by: renovate-gh-app-micxer[bot] <202420550+renovate-gh-app-micxer[bot]@users.noreply.github.com>
Co-authored-by: micxer <micxer@micxer.de>

Author: renovate-gh-app-micxer[bot]

defaults/main.yml

@@ -6,8 +6,8 @@ homestack_output_path: "~"
 # renovate: image=traefik
 homestack_traefik_version: v3.3.6
 # renovate: image=ghcr.io/tarampampam/error-pages
-homestack_error_pages_version: 2.27
-homestack_error_pages_theme: matrix
+homestack_error_pages_version: 3.3
+homestack_error_pages_theme: app-down
 # homestack_traefik_hostingde_api_key:  # must be set
 homestack_traefik_hostingde_domain: example.com
 homestack_traefik_base_domain: example.com