🎈 Release

Preparation for 1.0.0 release.

:warning: Pending ign-launch5 release

Checklist

[x] Asked team if this is a good time for a release
[x] There are no changes to be ported from the previous major version
[x] No PRs targeted at this major version are close to getting in
[x] Bumped minor for new features, patch for bug fixes
[x] Updated changelog
[x] Updated migration guide (as needed)
[x] Link to PR updating dependency versions in appropriate repository in ignition-release (as needed): https://github.com/ignition-release/ign-fortress-release/pull/7

Note to maintainers: Remember to use Squash-Merge