bitbucket-pipelines.yml: Change `make check` to `make distcheck`
Now that `make distcheck` should succeed, we can just use it as it
internally does `make check`. This patch changes the BitBucket
pipeline file to do so.
/**
* Send commands to Purple via ~/.purple/control
*
* Originally by Eric Warmenhoven <eric@warmenhoven.org>
* Compile fixes/mini hacks Alex Bennee <alex@bennee.com>
* and Brian Tarricone <bjt23@users.sourceforge.net>