Run the build task for merge groups

[CheaterCodes]

I want to enable and require the new merge queue feature for the main branch. This requires to have checks also run on merge_queue. for more info, see here: https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue#triggering-merge-group-checks-with-github-actions