The suggested SQL in some of the assertions was not cross-db
but db-dependent. Now we just keep that part out from the
assertions, because it's not important to verify the
errors that are being asserted.

Add a correct mime type for h5p files and update existing
mime type for stored h5p files.

These pages are often loaded in parallel.

This links directly to our own pages relating to funding.

When deploying a new H5P resource we need to ensure that
we don't start deploying the same H5P in another thread
(e.g. for another session/user).

It comes with behat/mink 1.8.x that provides php74 compatibility.

lock file generated with php72 (min version supported by the branch)

Before Mink 1.8.0, any call to getSession() used to auto-start
the session if it was not avaliable there. That always has been
an unsupported detail.

With https://github.com/minkphp/Mink/pull/705 new sessions aren't
auto-created anymore.

And we were relying on that.

So this is, simply about to explicitly create the new session
in our before_scenario stuff, to guarantee that it's always there.