Description
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<!-- Add here descriptions what changes, why it is required, usecases, ... !-->


Conformity
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- [ ] [Changelog entry](https://invent.kde.org/education/labplot/-/blob/master/ChangeLog)
- [ ] Unit tests
- [ ] Update INSTALL
- [ ] Downport
- Fixes: <!-- Add here the bugs you fixed. You can add multiple by separating them by a comma !-->
<!-- - [ ] [Dokumentation] (TODO) !-->

When external dependencies are removed
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- [ ] Reporting to ...
