Bump composer/composer

Bumps the prod-dependencies group with 1 update in the /composer/helpers/v2 directory: [composer/composer](https://github.com/composer/composer).


Updates `composer/composer` from 2.7.4 to 2.7.6
- [Release notes](https://github.com/composer/composer/releases)
- [Changelog](https://github.com/composer/composer/blob/main/CHANGELOG.md)
- [Commits](composer/composer@2.7.4...2.7.6)

---
updated-dependencies:
- dependency-name: composer/composer
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: prod-dependencies
...

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