Bump composer/composer from 1.4.2 to 1.7.2
Bump composer/composer from 1.4.2 to 1.7.2

Bumps [composer/composer](https://github.com/composer/composer) from 1.4.2 to 1.7.2.
- [Release notes](https://github.com/composer/composer/releases)
- [Changelog](https://github.com/composer/composer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/composer/composer/compare/1.4.2...1.7.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
php-api-clients/installer