dns/flamethrower: update 0.10 -> 0.11.0

• enable DNS over HTTPS (DoH)
• bug fixes etc

PR: 250401
Reported by: Michal Nowak <mnowak@startmail.com>
Approved by: pcarboni@gmail.com (maintainer timeout)
Relnotes: https://github.com/DNS-OARC/flamethrower/releases/tag/v0.11.0