Log Message:
php-composer: Update to 2.0.9

Upstream release notes:
- Added warning if the curl extension is not enabled as it significantly
  degrades performance
- Fixed InstalledVersions to report all packages when several vendor dirs are
  present in the same runtime
- Fixed download speed when downloading large files
- Fixed archive and path repo copies mishandling some .gitignore paths
- Fixed root package classes not being available to the plugins/scripts during
  the initial install
- Fixed cache writes to be atomic and better support multiple Composer
  processes running in parallel
- Fixed preg jit issues when config or require modifies large composer.json
  files
- Fixed compatibility with envs having open_basedir restrictions
- Fixed exclude-from-classmap causing regex issues when having too many paths
- Fixed compatibility issue with Symfony 4/5
- Several small performance and debug output improvements