Updated pumping tests

[HsHeesen]

No description provided.

[mbakker7]

Thanks for this PR. When updating the files, please submit notebooks without output and (if you can) run ruff.

[mbakker7]

@dbrakenhoff could it be that these tests are failing because the testing environment uses a newer version of numpy?

[dbrakenhoff]

@HsHeesen, @mbakker7 we can test this again once #56 is merged into dev and this branch is synchronized with dev. I can take of that when we get #56 sorted.

[dbrakenhoff]

Nice work! No comments on the implementation.

My only question is why timflow isn't able to reproduce some of the results obtained with Aqtesolve/MLU? I guess we sometimes calibrate to slightly different data, and if the RMSE is similar, I guess we've found another (local) minimum? So maybe not so surprising, but if that is the case we could mention that in the comment on the final results (which I think is already done for some, but I think not all)?

[mbakker7]

Ready to go. Thanks for your PR.