Fix changelog, bump min SDK (#488)

add a general dart command (#459)

This enables things like mono_repo dart fix --apply, mono_repo dart analyze, mono_repo dart run build_runner build etc.

I did bump the min SDK so I could use a switch expression, let me know if you feel strongly about supporting older SDKs. They can still use older versions so I think it's fine though.

Closes #458

parse action versions out of workflow files (#420)

- parse action versions out of workflow files when the versions in that action file are managed by dependabot

This will allow us to configure dependabot version upgrades for repos that use mono_repo to generate (and re-generate) their actions configurations.

Code generate the hard coded versions from our own workflow file so that dependabot can manage that as well.

Restore ordering of jobs to what it was before (#450)

Restore ordering with explicit secondary sort by insertion order

Add topics (#449)

Also preps the 6.5.5 release.

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Co-authored-by: Jake Macdonald <jakemac@google.com>

update to the latest action versions (#439)

* update to the latest action versions

* update action name

* update version

* regen