ci: Workaround in the aarch64 runner to avoid out of space

[Smjert]

Due to some new libraries being added to the build, we hit the disk space limit on the aarch64 runner; this adds a workaround to cleanup some build artifacts that are not needed after a certain point, which helps give some breathing space.

You can see a job failing here: https://github.com/osquery/osquery/actions/runs/4183644659/jobs/7248309929

And a build where I was testing this workaround: https://github.com/osquery/osquery/actions/runs/4185682265

Adding 30MB of a single static library caused ~4GB of additional disk space taken by tests.

See this comment for further explanation: #6397 (comment)

[directionless]

Happy to approve, but if there are more than a couple, this will generally be faster in an find | xargs | rm pipeline. Though you have to worry more about spaces.

[Smjert]

Happy to approve, but if there are more than a couple, this will generally be faster in an find | xargs | rm pipeline. Though you have to worry more about spaces.

Deleting those files takes few seconds; the whole step (including installing) is taking 19 seconds, I don't think it's a problem.