Bump composer/composer from 2.7.0 to 2.7.8 in the composer group

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


Updates `composer/composer` from 2.7.0 to 2.7.8
- [Release notes](https://github.com/composer/composer/releases)
- [Changelog](https://github.com/composer/composer/blob/main/CHANGELOG.md)
- [Commits](composer/composer@2.7.0...2.7.8)

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

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