Some of the actions used in the release pipeline throw warnings about being
outdated so they have been replaced. Looks like Github themself are no longer
maintaining the actions around releases.
The two Darwin builds have been collapsed into one action so there is only one
machine and one git checkout and one upload action.
* update dependencies
* add some status badges
crates.io
testing status
dependency status
* add cargo-audit ci
* add dependabot for cargo and github actions updates
The problems I had using podman were resolved by realizing that ubuntu-latest
does not actually mean the latest version of Ubuntu (for now) so explicitly
stating the Ubuntu version, installing podman works fine and can build binaries
for Raspberry Pi properly.