Use new dnssec.color instead of the removed dnssecClass variable

[DL6ER]

What does this implement/fix?

See title. This fixes a hidden merge conflict that arose as regression of merging both #3184 and #3185 which had in parts incompatible changes.

Symptoms are failing tests on development as well as displaying issues on the Query Log for queries where EDE (extended DNS errors) are available (usually DNSSEC BOGUS queries).

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Related issue or feature (if applicable): N/A

Pull request in docs with documentation (if applicable): N/A

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