[pigeon] bumps analyzer support to between 10 and 12

[tarrinneal]

Don't land this until previous bump lands

fixes flutter/flutter#184119

[flutter-dashboard]

It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

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[tarrinneal]

@stuartmorgan-g I'm not really sure how to deal with failures in all_packages. Happy to learn, but it doesn't even have a pubspec, so I don't know how to debug deps