Fix solution licenses

[Thijss]

Fixes issue: # name and number of the issue

Changes proposed in this PR include:

Here you can elaborate on the chosen solution strategy, which changes did you make and which goal do they serve. Perhaps also which things are you still unsure of.

• ..

Could you please pay extra attention to the points below when reviewing the PR:

Here you can point out modules or complex implementation that require special attention, .e.g have a look at module foo.py and bar.py.

• ..

Checks

• If changes are related to CI/CD, are they verified via a manual run on this branch?