adblock: update 4.0.7

* fix aria2c download options
* fix report engine with empty domains
* fix safesearch ips of safe.duckduckgo.com (get ips dynamically)
* fix safesearch ips of safesearch.pixabay.com (get ips dynamically)
* add regional blocklist for italy
* shellcheck adjustments
* add test.sh for CI testing

Signed-off-by: Dirk Brenken <dev@brenken.org>