Bump subosito/flutter-action from 2.12.0 to 2.16.0

[dependabot]

Bumps subosito/flutter-action from 2.12.0 to 2.16.0.

Release notes

Sourced from subosito/flutter-action's releases.

v2.16.0

This release introduces the dry-run option, which lets you only get action outputs without downloading Flutter. This can be useful if you want to set up some automations to be notified about new Flutter releases.

steps:
  - name: Clone repository
  - uses: actions/checkout@v4
  - name: Set up Flutter
    uses: subosito/flutter-action@v2
    id: flutter-action
    with:
      channel: stable
      dry-run: true
  - run: |
      # Always print the latest stable version.
      echo CHANNEL=${{ steps.flutter-action.outputs.CHANNEL }}
      echo VERSION=${{ steps.flutter-action.outputs.VERSION }}
    shell: bash

Thank you @​kzrnm for suggesting and implementing it in #270!

v2.15.0

Hi! I'm Bartek and I'm a new maintainer of this action. I promise to take good care of it.

This release introduces the flutter-version-file option (implemented in #290), which lets you easily centralize Flutter version in a single place – your pubspec.yaml file:

You can use it like this:

steps:
  - name: Clone repository
    uses: actions/checkout@v4
  - name: Set up Flutter
    uses: subosito/flutter-action@v2
    with:
      channel: stable
      flutter-version-file: pubspec.yaml # path to pubspec.yaml

Please note that for this to work, you need to specify exact Flutter version in pubspec.yaml:

environment:
  dart: ">=3.3.0 <4.0.0"
  flutter: 3.19.0 # This must be exact! No ranges allowed.

Apart from that, some minor README updates and code cleanup were performed.

... (truncated)

Commits

• 44ac965 Add dry-run (#270)
• 980391a more README fixes (#292)
• 3d80492 update README (#291)
• 0ef13f1 Add flutter-version-file (#290)
• 7564de3 Merge pull request #288 from subosito/chore/action_yaml_refactor
• 2b3ab6c convert some if-statements to be POSIX-compatible
• 49cd171 split longer lines
• cf12a39 Merge pull request #287 from subosito/minor
• cea4cf6 workflow.yaml: minor fix
• 043862d Merge pull request #286 from subosito/format
• Additional commits viewable in compare view

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