Increase repository storage size to allow for cleaning and purging

I have a similar issue as Sam in this issue: #136 (closed)

I have reached the 1 GB storage limit, but I can't clean and purge the repository because I can't push anything anymore.

Could my storage be upgraded to 2 GB? It seems like the easiest solution. The repository is: https://gitlab.developers.cam.ac.uk/psychol/abg/apl-modelling

I will clean up the repository after I pushed my new updates. I realised that storing too many (and large) files is not best practice, and I will look into Gitlab Large File Storage solutions going forward.

Thanks a lot for any help!