Upgrade github.com/miekg/dns

[sylr]

Latest version of github.com/miekg/dns does not have the ErrTruncated anymore, see: miekg/dns#815

The commit message says:

Any program using ErrTruncated will fail to compile when they update to
this version: this is by design: you're doing it wrong. For checking if
a message was truncated you should checked the msg.Truncated boolean;
assuming the unpack didn't fail.

Thanos use a recent version of github.com/miekg/dns and it is not an issue now but it might become (for Thanos) if #5009 makes it to master as the dependency tree of prometheus within thanos will become bigger as Thanos imports github.com/prometheus/rules (indirectly I guess) which will import github.com/prometheus/config which itself imports a lot of libs needed for discovery like github.com/miekg/dns.

cc @bwplotka

[simonpasquier]

Closed by #5020