meta-*: bump layers/sw/meta-flutter from 67d7a4d to a5d163c

Bumps [layers/sw/meta-flutter](https://github.com/meta-flutter/meta-flutter) from `67d7a4d` to `a5d163c`.
- [Release notes](https://github.com/meta-flutter/meta-flutter/releases)
- [Commits](meta-flutter/meta-flutter@67d7a4d...a5d163c)

---
updated-dependencies:
- dependency-name: layers/sw/meta-flutter
  dependency-version: a5d163c43722d358d21fdbca4920e42a45042c5c
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]