php-composer: update to 1.10.7

Upstream release notes:

1.10.7

* Fix PHP 8 deprecations
* Fixed detection of pcntl_signal being in disabled_functions when
  pcntl_async_signal is allowed

1.10.6

* Fixed version guessing to take composer-runtime-api and
  composer-plugin-api requirements into account to avoid selecting
  packages which require Composer 2
* Fixed package name validation to allow several dashes following each
  other
* Fixed post-status-cmd script not firing when there were no changes to
  be displayed
* Fixed composer-runtime-api support on Composer 1.x, the package is now
  present as 1.0.0
* Fixed support for composer show --name-only --self
* Fixed detection of GitLab URLs when handling authentication in some
  cases

(tpaul)