Expose DNS query timeout as check parameter

[winks]

Pull Request Checklist

Is this in reference to an existing issue?

No

General

• [x] Update Changelog following the conventions laid out on Keep A Changelog
• [x] Update README with any necessary configuration snippets
• [x] Binstubs are created if needed
• [x] RuboCop passes

bin/check-dns.rb:121:3: C: Assignment Branch Condition size for run is too high. [100.2/100]

Feel free to mangle the code so that the functionality fits the check

• [x] Existing tests pass

Are there any?

Purpose

Add timeout to the resolver lookup

[sstarcher]

failing CI and has merge conflicts

[winks]

I wrote why it failed the CI, because apparently Rubocop insists on extracting all CLI argument sanity checks to extra methods.

And there was no merge conflict before that PR was merged today.

[winks]

Updated.

[majormoses]

@winks could you rebase please?

[winks]

@majormoses Done.