cherry-pick: upd-domains-and-links

Merge in DNS/adguard-home from upd-domains-and-links to master

Squashed commit of the following:

commit 5e5ff2fec358104995877da689da24749ac470ce
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Jul 28 19:53:19 2022 +0300

    all: upd urls

    Update domains and URLs to make them more resistant to state blocking.

internal/updater/updater.go

@@ -82,8 +82,9 @@ type Config struct {
 func NewUpdater(conf *Config) *Updater {
 	u := &url.URL{
 		Scheme: "https",
-		Host:   "static.adguard.com",
-		Path:   path.Join("adguardhome", conf.Channel, "version.json"),
+		// TODO(a.garipov): Make configurable.
+		Host: "static.adtidy.org",
+		Path: path.Join("adguardhome", conf.Channel, "version.json"),
 	}
 	return &Updater{
 		client: conf.Client,