meta-*: bump layers/sw/meta-flutter from f12d340 to 0efe64d

Bumps [layers/sw/meta-flutter](https://github.com/meta-flutter/meta-flutter) from `f12d340` to `0efe64d`.
- [Release notes](https://github.com/meta-flutter/meta-flutter/releases)
- [Commits](meta-flutter/meta-flutter@f12d340...0efe64d)

---
updated-dependencies:
- dependency-name: layers/sw/meta-flutter
  dependency-type: direct:production
...

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Author: dependabot[bot]