We're a few years behind the curve on this one, but using "master" as a
programming term is a callous practice that explicitly uses the
historical institution of slavery as a cheap, racist metaphor. Switch to
using "main", as it's the new default in git and GitHub.
The `gnupg` package from Homebrew only installs a `gpg` binary, not a `gpg2` binary. I had previously worked around this by manually creating an alias, but I think we can do better.
GPG version 1 is ancient and [hasn't seen a release since 2006](https://gnupg.org/download/release_notes.html). Additionally, `gpg` has referred to GPG 2 in Ubuntu since at least 20.04 which is the oldest non-EOL'd version as of writing this so I think this change is safe to make.
Update python version to 3.12 and base to core24 in snaps (#9983)
Fixes #9872, originally merged in #9956.
To upgrade to python3.12 as 3.8 is reaching EOL, we need to upgrade the core snap that certbot is based on. The latest version is core24, so we're going with that for longevity. We will want to notify third party snaps to make changes as well. They can release their snaps to a version higher than certbot's, and their users will not be upgraded until the matching (or greater) version of certbot is released. They should do this as otherwise including these changes will break their plugins.
