Run integration tests against Composer snapshot for a limited set of builds to get early warning of upcoming changes we need to be aware of.
It has already been announced that Composer 2.3 will drop support for PHP < 7.2 and there may be more breaking changes, so seeing test failures early would seem a good thing (both to fix things in the plugin, if needs be, as well as to report issues with the next version of Composer upstream).
Proposed Changes
Run integration tests against Composer snapshot for a limited set of builds to get early warning of upcoming changes we need to be aware of.
It has already been announced that Composer 2.3 will drop support for PHP < 7.2 and there may be more breaking changes, so seeing test failures early would seem a good thing (both to fix things in the plugin, if needs be, as well as to report issues with the next version of Composer upstream).