Check for valid OS via IPv4 and IPv6

[yubiuser]

What does this PR aim to accomplish?:

Explicitly using IPv4 and IPv6 to fetch the list of supported OS.

Should fix #5303

See https://discourse.pi-hole.net/t/unsupported-os-detected-upon-pi-hole-update-w-ubuntu-22-04/63161/8

How does this PR accomplish the above?:

Doubles the code for IPv6

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[pralor-bot]

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

https://discourse.pi-hole.net/t/unsupported-os-detected-upon-pi-hole-update-w-ubuntu-22-04/63161/13

[dschaper]

Please target development. This is something that can go out before v6.

[yubiuser]

Backport PR #5399

[pralor-bot]

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

https://discourse.pi-hole.net/t/possible-minor-issues-and-comments/65437/15