debugging issues around specifying the latest patch release

[devoncarew]

• debugging issues around specifying the latest patch release

Investigation around https://github.com/dart-lang/setup-dart/issues/107.

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[devoncarew]

Note that the build failure here is due to the action now requiring 3.3.0-0 to build, but the dev channel is not yet on a 3.3.0 version. This doesn't effect the behavior of the action itself, just our build validation bot.

[devoncarew]

Thanks for the reviews; updated for review feedback and for a fix from https://github.com/dart-lang/setup-dart/issues/107#issuecomment-1753713905.

[athomas]

FYI, build is still failing because of the 3.3.0-0 SDK requirement. It will start working on Thu when the first 3.3 dev release gets published.