This is mostly a noop, just updating to the new way of storing cached
queries and a few other changes per
https://github.com/launchbadge/sqlx/blob/main/CHANGELOG.md#070---2023-06-30
Note that this uses some of the code from #729 (thanks @upsicleclown !)
A minor unrelated change - a reformat of `martin/release.toml`
