Bump composer/composer in the composer group across 1 directory

Bumps the composer group with 1 update in the / directory: [composer/composer](https://github.com/composer/composer).


Updates `composer/composer` from 2.7.9 to 2.9.3
- [Release notes](https://github.com/composer/composer/releases)
- [Changelog](https://github.com/composer/composer/blob/main/CHANGELOG.md)
- [Commits](composer/composer@2.7.9...2.9.3)

---
updated-dependencies:
- dependency-name: composer/composer
  dependency-version: 2.9.3
  dependency-type: indirect
  dependency-group: composer
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]