Release notes automation for daedaluswallet.io

[disassembler]

Tomas updates the release notes (and perhaps other content?) on daedaluswallet.io every release. When DevOps proposes the new mainnet installers on the blockchain, we also update the daedalus-latest.version.json so the installer links on the website are updated without manual intervention.

I suggest we work toward having all standard release-related updates encoded in the daedalus-latest-version.json file. Otherwise, we have complicated timing issues where DevOps has been asked to do the update in the middle of Tomas' night.

Previous issue: https://iohk.myjetbrains.com/youtrack/issue/DEVOPS-904