chore(deps): update traefik docker tag to v2.11.5 (#58)

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

Author: renovate[bot]

build-images.sh

@@ -10,7 +10,7 @@ container=$(buildah from scratch)
 buildah add "${container}" imageroot /imageroot
 buildah add "${container}" ui /ui
 buildah config --entrypoint=/ \
-    --label="org.nethserver.images=docker.io/traefik:v2.11.2" \
+    --label="org.nethserver.images=docker.io/traefik:v2.11.5" \
     --label="org.nethserver.flags=core_module" \
     "${container}"
 buildah commit "${container}" "${repobase}/${reponame}"