chore: 0.28.0

[vgvbot]

🚨 There are changes ready for release 🚀

ℹ Merge this PR once the team confirms the release is ready.

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0.28.0 (2025-09-18)

Features

• add support --platform in tests (#1359) (a3c2fd9)
• Adding report-on flag to the dart test command (#1348) (5cf1d27)
• upgrade to flutter 3.35.0 (#1344) (215cbdb)

Bug Fixes

• report malformed licenses as unknown (#1342) (47aa776)
• update test optimizer bundle path and content (#1358) (7f8c01b)

Miscellaneous Chores

• update SPDX licenses (#1341) (d0321e8)
• update SPDX licenses (#1350) (76a8f10)

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[marcossevilla]

holding this until we merge:

• fix: report malformed licenses as unknown #1342
• feat: upgrade to flutter 3.35.0 #1344

[marcossevilla]

the previous PRs are already merged but we should wait until:

• VGA lands a stable v10 and we upgrade to it (https://github.com/VeryGoodOpenSource/very_good_analysis/releases/tag/v10.0.0-rc.1)
• templates are also bumped to VGA 10 (feat: upgrade to very_good_analysis 10.0.0 very_good_templates#346)