Add DNSSEC info to OpenDNS description

[yubiuser]

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What does this PR aim to accomplish?:
Adds info that OpenDNS supports DNSSEC now.

https://support.opendns.com/hc/en-us/articles/360039659971-DNSSEC-General-Availability
https://discourse.pi-hole.net/t/in-gui-note-on-opendns-support-for-dnssec/36500

How does this PR accomplish the above?:
Just change the description

What documentation changes (if any) are needed to support this PR?:
No.

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/in-gui-note-on-opendns-support-for-dnssec/36500/4

[dschaper]

Can verify that the IPv4 addresses do support +trace +dnssec but can't validate the IPv6.

Is there a doc somewhere we can reference to link to from OpenDNS?

[yubiuser]

https://support.opendns.com/hc/en-us/articles/360039659971-DNSSEC-General-Availability

?

[dschaper]

That would do it! Thanks.

[pralor-bot]

This pull request has been mentioned on Pi-hole Userspace. There might be relevant details there:

https://discourse.pi-hole.net/t/pi-hole-core-web-v5-2-and-ftl-v5-3-released/40909/1