[cynthiajoan]

Description

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Related Issues

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Checklist

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This will ensure a smooth and quick review process. Updating the pubspec.yaml and changelogs is not required.

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• My PR includes unit or integration tests for all changed/updated/fixed behaviors (See Contributor Guide).
• All existing and new tests are passing.
• I updated/added relevant documentation (doc comments with ///).
• The analyzer (melos run analyze) does not report any problems on my PR.
• I read and followed the Flutter Style Guide.
• I signed the CLA.
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Breaking Change

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• Yes, this is a breaking change.
• No, this is not a breaking change.

[gemini-code-assist]

Code Review

This pull request updates the documentation and configuration files to release Flutter BoM version 4.20.2 (dated 2026-10-23). Specifically, it adds the release details, including native Firebase SDK versions and FlutterFire plugin versions, to VERSIONS.md and scripts/versions.json. I have no feedback to provide as there are no review comments or issues identified in these changes.