[dns-wg] Update RIPE's DNS Zonemaster

Hi,

regarding to RFC 8624 is the support of DNSSEC algorithm ED25519 is only RECOMMENDED [0].

This is the current distribution of DNSSEC algorithms across all 224 RIPE's in-addr.arpa. zones (some of them are counted multiple times because different hashing algorithms might be used per zone):
awk '$2=="DS" && $4=="5" { print $0 }' *.in-addr.arpa-RIP | wc -l
18
awk '$2=="DS" && $4=="7" { print $0 }' *.in-addr.arpa-RIP | wc -l
30
awk '$2=="DS" && $4=="8" { print $0 }' *.in-addr.arpa-RIP | wc -l
114
awk '$2=="DS" && $4=="10" { print $0 }' *.in-addr.arpa-RIP | wc -l
9
awk '$2=="DS" && $4=="13" { print $0 }' *.in-addr.arpa-RIP | wc -l
208
awk '$2=="DS" && $4=="14" { print $0 }' *.in-addr.arpa-RIP | wc -l
20
awk '$2=="DS" && $4=="15" { print $0 }' *.in-addr.arpa-RIP | wc -l
0

DNSSEC algorithm 5 "RSASHA1" is NOT RECOMMENDED [0], but is still used 18 times.

Please add support for DNSSEC algorithm ED25519.

cheers,
-arsen

[0] https://tools.ietf.org/html/rfc8624#section-3.1

* Arsen STASIC <arsen.stasic at univie.ac.at> [2020-12-21 11:31 (+0100)]:
>Hi,
>
>RIPE's DNS Zonemaster version might be outdated, because it does not support DNSSEC algorithm ED25519. This is the error message:
>Signature for DNSKEY with tag 52537 failed to verify with error 'Unknown cryptographic algorithm'.
>https://dnscheck.ripe.net/test/328db6c75665721b
>
>
>But the Zonemaster software (Versions: engine 4.0.3, backend 6.0.2, GUI 3.2.1) has already support for DNSSEC algorithm ED2551:
>https://www.zonemaster.net/result/c1607f01d96a8d60
>
>
>It would be good if RIPE's Zonemaster could also list its version numbers.
>
>cheers,
>-Arsen