update of mcbm CI tests

An update of the mcbm CI tests, as it is suggested by Pierre here: https://redmine.cbm.gsi.de/issues/2900

The update is already included in another MR: !1183 (merged)

But I decided to make a separate MR for this particular update in order to not mix different topics in the other MR.

I closed this MR since it can not be merged separately from !1183 (merged) because of the missing mat. budget files.