Bump the github-actions group across 1 directory with 6 updates (#518)

Bumps the github-actions group with 6 updates in the / directory:

Package	From	To
actions/cache	4.3.0	5.0.4
dart-lang/setup-dart	1.7.1	1.7.2
actions/checkout	5.0.0	6.0.2
subosito/flutter-action	2.21.0	2.23.0
codecov/codecov-action	5.5.1	6.0.0
actions/stale	10.0.0	10.2.0

Updates actions/cache from 4.3.0 to 5.0.4

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Updates dart-lang/setup-dart from 1.7.1 to 1.7.2

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Updates actions/checkout from 5.0.0 to 6.0.2

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Updates subosito/flutter-action from 2.21.0 to 2.23.0

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Updates codecov/codecov-action from 5.5.1 to 6.0.0

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Updates actions/stale from 10.0.0 to 10.2.0

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---

updated-dependencies:

• dependency-name: actions/cache dependency-version: 5.0.4 dependency-type: direct:production update-type: version-update:semver-major dependency-group: github-actions
• dependency-name: dart-lang/setup-dart dependency-version: 1.7.2 dependency-type: direct:production update-type: version-update:semver-patch dependency-group: github-actions
• dependency-name: actions/checkout dependency-version: 6.0.2 dependency-type: direct:production update-type: version-update:semver-major dependency-group: github-actions
• dependency-name: subosito/flutter-action dependency-version: 2.23.0 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: github-actions
• dependency-name: codecov/codecov-action dependency-version: 6.0.0 dependency-type: direct:production update-type: version-update:semver-major dependency-group: github-actions
• dependency-name: actions/stale dependency-version: 10.2.0 dependency-type: direct:production update-type: version-update:semver-minor dependency-group: github-actions …

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