Final check of exposed credentials

[alj-b]

Checking that there are no credentials left exposed anywhere on main.

[rjeantet]

I guess we would need to delete the commits where the credentials were pushed. Not sure how to do that though?
@ChristinaLisa you have a look at it ?

[alj-b]

Not sure if that's possible and if we should do it to that degree. If we want, we can decide on a different password internally and change it to that on MongoDB Atlas.