Refresh mentioned repos

[TimmRuppert]

Description

We have now osi-python, osi-cpp and qc-osi-trace while the validation package is outdated.

Also the doc page and the dropdown might want to list the same repos.

doc page

https://github.com/OpenSimulationInterface/osi-documentation/blob/bea33661995ecaba12faada654cdccbfb1e11e9e/content/general_docs/osi_repos.adoc

Dropdown

Rework the entries of the repo selection/dropdown

• remove ["https://github.com/OpenSimulationInterface/osi-validation","OSI Validation"]
• add osi-python
• osi-cpp

osi-documentation/.antora/antora.yml

Line 38 in bea3366

page-repository-links: [["https://github.com/OpenSimulationInterface/open-simulation-interface", "Open Simulation Interface"],["https://github.com/OpenSimulationInterface/osi-sensor-model-packaging","OSI Sensor Model Packaging"],["https://github.com/OpenSimulationInterface/osi-validation","OSI Validation"]]