Update upstream DNS server capability descriptions

Mention that the below 3 upstream DNS support DNSSEC:
- Cloudflare (see https://developers.cloudflare.com/1.1.1.1/faq#how-does-1111-work-with-dnssec)
- DNS.WATCH (see https://dns.watch/index)
- Google (see https://developers.google.com/speed/public-dns/faq#dnssec)
- Quad9 (see https://www.quad9.net/support/faq/#dnssec)

Other providers and capabilities (e.g., ECS) were not checked.

Signed-off-by: xanoni <77220130+xanoni@users.noreply.github.com>

automated install/basic-install.sh

@@ -34,15 +34,15 @@ export PATH+=':/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'
 
 # List of supported DNS servers
 DNS_SERVERS=$(cat << EOM
-Google (ECS);8.8.8.8;8.8.4.4;2001:4860:4860:0:0:0:0:8888;2001:4860:4860:0:0:0:0:8844
+Google (ECS, DNSSEC);8.8.8.8;8.8.4.4;2001:4860:4860:0:0:0:0:8888;2001:4860:4860:0:0:0:0:8844
 OpenDNS (ECS, DNSSEC);208.67.222.222;208.67.220.220;2620:119:35::35;2620:119:53::53
 Level3;4.2.2.1;4.2.2.2;;
 Comodo;8.26.56.26;8.20.247.20;;
-DNS.WATCH;84.200.69.80;84.200.70.40;2001:1608:10:25:0:0:1c04:b12f;2001:1608:10:25:0:0:9249:d69b
+DNS.WATCH (DNSSEC);84.200.69.80;84.200.70.40;2001:1608:10:25:0:0:1c04:b12f;2001:1608:10:25:0:0:9249:d69b
 Quad9 (filtered, DNSSEC);9.9.9.9;149.112.112.112;2620:fe::fe;2620:fe::9
 Quad9 (unfiltered, no DNSSEC);9.9.9.10;149.112.112.10;2620:fe::10;2620:fe::fe:10
-Quad9 (filtered + ECS);9.9.9.11;149.112.112.11;2620:fe::11;2620:fe::fe:11
-Cloudflare;1.1.1.1;1.0.0.1;2606:4700:4700::1111;2606:4700:4700::1001
+Quad9 (filtered, ECS, DNSSEC);9.9.9.11;149.112.112.11;2620:fe::11;2620:fe::fe:11
+Cloudflare (DNSSEC);1.1.1.1;1.0.0.1;2606:4700:4700::1111;2606:4700:4700::1001
 EOM
 )